The amount is so little, the potential penalty so very big.
Get caught passing marijuana to a friend in Montana - as Matthew Otto did last November - and you could end up facing life in prison.
In theory, at least. And in law, too.
Otto was convicted last month of criminal distribution of a dangerous drug, a classification that includes marijuana. The law in such cases calls for a minimum penalty of a year in prison and a maximum of life.
Actual practice is a different story.
"Nobody is ever going to ask for life in prison, ever," said Deputy Missoula County Attorney Andrew Paul, who prosecutes drug cases, including Otto's. "It's not as if any county attorney's office in the state has a vendetta against small-time weed use."
Brant Light, who heads the Montana Department of Justice's Prosecution Services Bureau, said that "while Montana's laws - which are crafted by the Legislature - do not differentiate between substances or amounts, the reality is judges by and large are not sentencing young, first-time offenders to prison for selling small amounts of marijuana."
The Montana Supreme Court ruled in 1983, in State v. Arbgast, that state law allows for deferred or suspended sentences in cases involving marijuana sales.
"While the judge exercises his or her best discretion," Light said, "those first-time offenders are likely to face a deferred or suspended sentence."
A review by the state Public Defender's Office bore out those statements. Public defenders handled 76 cases statewide between January 2010 and January 2011 involving distribution of dangerous drugs, a category that includes narcotics, opiates, heroin and cocaine. Five of those cases involved small amounts of marijuana and two of the five were in Missoula County. Probationary sentences are typical, according to the Public Defender's Office.
Still, "I don't see anything in statutes themselves that would preclude them from applying (the stricter penalty) when they see fit," said Chris Lindsey, a Missoula attorney who often represents people in medical marijuana cases.
The fact that the penalty remains on the books rattles marijuana proponents.
Said John Masterson, head of Montana NORML, the National Organization for the Reform of Marijuana Laws, "I'll take (the county attorney's office) at their word that that's the unwritten prosecutorial policy."
But he called the law, "madness, absolute madness. ... Montanans believe it's absurd to have laws prohibiting consensual acts between adults."
While there's plenty of gray regarding the penalty, the law regarding the offense is black and white.
Otto had a medical marijuana card. But his legal pot became illegal the minute he handed a pipe filled with it to someone else, Missoula County District Judge Dusty Deschamps reminded jurors in his instructions to them on March 30. Such instructions don't include information on the potential penalties.
If jurors found that Otto passed that pipe - even though it held just 3 grams of marijuana, about a tenth of an ounce - Deschamps told them, they had to find him guilty. And they did.
Montana's law is among the toughest in the nation, according to NORML, which maintains a list of state penalties for marijuana offenses.
In Oregon, California and Ohio, for instance, "gifts" of small amounts of pot are violations or misdemeanors. And many states take the amount involved into consideration when it comes to the sale and distribution of marijuana. Sell or distribute to minors, or in a school zone, and the penalty goes up. In Montana, penalties increase if minors are involved, or if someone has previous convictions.
Alabama has a potential life sentence for marijuana offenses, but only for selling to minors, or trafficking more than 1,000 pounds.
Recent prosecutions of marijuana distribution in Missoula County also involved other allegations, such as dealing drugs, or sharing with minors.
Teuray Cornell, whose case gained national notoriety in December when potential jurors objected to prosecuting a case involving 1/15th of an ounce of marijuana, was a convicted felon who also was accused of dealing.
Earlier this month, a 28-year-old medical marijuana patient, Benjamin Levi Bartlett, was charged with criminal distribution of dangerous drugs after being accused of sharing a bowl last summer with a 15-year-old girl on the Clark Fork River trail.
Last month, Tyler Andre Pyle, an 18-year-old medical marijuana patient, allegedly gave marijuana-laced butter to a DeSmet School eighth-grader, who made cookies with it and shared them with friends at school. Pyle also was charged with criminal distribution of dangerous drugs.
And in Ravalli County, a Billings couple was charged last month for selling "a bowl or two" of their legally acquired medical marijuana for $10, according to the Ravalli Republic.
Therein lies the problem with Montana's law, said Lindsey.
"What a prosecutor may do in a fairly liberal community may be completely different than what a prosecutor might do in a different community," Lindsey said. "It comes up against the issue of fundamental fairness on many fronts."
All of those cases will play out in court during the next several weeks.
Bartlett is scheduled for a preliminary hearing Monday in Missoula County Justice Court. Otto is to be sentenced May 3.
And Jaclyn Shannon, 19, and Christian Dinkle, 18, the Billings couple accused of selling the medical cannabis at the Trapper Creek Job Corps in Ravalli County, have another court appearance May 12.
Meanwhile, final action could come this week on the Montana Legislature's sole remaining revisions to the state's medical marijuana law. Any change in the present law, enacted by voter initiative in 2004, could widely affect marijuana prosecutions throughout the state.
Also, Montana's U.S. attorney, Michael Cotter, last week released a letter reiterating that his department would prosecute businesses unlawfully marketing marijuana. That letter also re-stated that the U.S. attorney's office "generally does not focus its limited resources on seriously ill individuals who use marijuana as part of a medically recommended treatment regimen consistent with applicable state law" - a position taken by the Justice Department in 2009.
Both situations underscore the need to formally lower the penalties for cases involving small amounts of pot, Lindsey said.
"Our criminal laws have not been updated to reflect what I think is where most people would place marijuana in the big scheme of things," Lindsey said.
Changing law will mean electing legislators who support such change, Masterson said.
"All eyes are on 2012," he said.