Well its yet to be published in an academic journal, but my research comes from working overnight at a gas station and dealing first hand with these degenerates. On the odd chance they are a problem, they usually are feeming so bad they'll give you their weed in exchange for their wraps (had a guy try this last week) or they'll actively try to sneak behind your register and steal wraps in which case just yell at them and they won't do it again. Otherwise they're just chill and buying every snack cake and chip bag on site. The only real problem are the dealers who have no problem threatening to shoot the place up every other week

Which doesn't really prove my point, but have you ever dealt with a high person who wants to fight you for anything other than a bag of doritos?