there's a few things i have to say on this subject.... one, if there's no proof it was yours (which there isn't much, unless he like took video of you handing it to him or something, otherwise it's his word against yours) keep denying that shit... and if you really wanna get away with it, pull a huge fuckin scene over it, if confronted by your parents, something along the lines of "i don't care if you dont' believe me, i know i didn't give him that shit, he just wants someone to blame it on so he isn't take the full force of the heat on it...." never admit to anything of this nature (of course, this doesn't apply to everything else, such as cheating on your girlfriend, stealing your parents money that type of stuff) unless there is hardcore proof that incriminates you... the worst that can happen if you deny it, is they don't believe you, in which case you face the punishment that you in actuality do deserve, you go admiting to shit, they might of not even known, and you face punishment when you might not of had to (there's not alot that you can be punished by, since your 19 and all, but i'ms ure your parents have something to hold over you head for incidents such as this.) more importantly your friend is a little bitch in my opinion.. i don't understand people like that.. fi they're alread going to be punished for it, why the fuck drag down other people... i got busted with weed when it was my brothers and mine, and a friends... i took the whole heat, because it was on me, and i was going to jail either way, they didn't have to suffer for it as well... if he doesn't realize it doesn't matter if he turns you in or not, that he's going to face the same consequences (very few parents look at the fact that their child was honest int he fact of what he did atleast, therefore lowering his sentence) whether they know it was you or not aswell, then you might want to inform him of it... and if all else fails, don't seek vengence... that type of shit is sure to catch up wtih him some day... like for instance if he goes to jail in the future, and him and another prisoner are doing something they're not supposed to be (doing coke for instance wh ile locked up) and he's the only one that gets caught, and decides to rat out the other person..... well lets just say it won't be a very pretty sight.... no matter what religion/beliefs you have, pretty much all state, that you're not to take vengence into your own hands, and that it will come back to that person (karma for example is the idea of doing something bad/wrong against someone and it coming back to you, most of the time being worse, or christianity the bible states do not judge, becasue they will be judged by god in the end, which could be translated to, do not seek vengence, as they will pay the price for it in the end) just my thoughts on the subject... no matter what, don't admit to it tho.... if police get inolved, you coudl easily be looking at possession/distribution of narcotics, endangering a minor, and a weird fact... if you give someone drugs, and they die from it, or almost die you can be charged with murder/attempted murder =/ kinda fucked up if you ask me.