for me its sort of hard. i usaly go with the suplier of the greens get first hit then the person whos got the pipe,(if sum one rolled the joint they get it first. then the driver or house owner then driver. then the munchies suplier. then the mutcher but i almost always fallow stoner etiquette. just one of my friends has a bad fucking pronlem with stealing ppls pipes and weed and papers and joints and money. i watch everything when im with him. but hey i cant say i never stole a bic when with a small group of friends and i usaly give it back, cuz i already have shit loads of them. just sumtimes its funnie to see sum one tear there car apart looking for there lighter while we are passing a joint around. hahahahaha