jolly muncher

Someone who tends to smoke more than his/her portion of a spliff.

a 'jolly muncher' is extremely familiar with phrases like "shit, sorry mate" or "I completely forgot" however it is advised that these apologies fall on deaf ears as their reluctance/refusal to actually buy any weed at all is remarkably unfaltering.

"shit, did you want any of that spliff?" "too late now isn't it? Nice one jolly muncher"