If its just 1 on 1 I try to be really careful about burning too much green... If its a bunch of us I torch that shit like its the last hit I'll ever take.
Yo man when you buy a 20 sack it should be a gift to everyone you smoke with and you should all smoke as much as you want without taking the piss, if you smoke your whole sack with him you shouldent give a shit about how much of his weed you smoke aslong as you dont smoke his hole 20 bag or something, me and my friends share more money in weed form between us than any other society i sometimes give my friends full grams as gifts if they have no weed, but i allways get a gram back in return, sharing is careing, PEACE! x