People you don't even know (and could never like anyway) coming up to you (at parties for example) and asking for some.

Last party I went to it kept happening loads, but the most irritating thing was people kept sniffing REALLY obviously an walking right up to me and asking "is that a joint?" to which I replied, No It's a magic banana.
the other thing someone said after doing the sniffing thing is "ooOO whats that lovely smell, I've been trying to find where it was coming from all evening, aahh I love weed me, are you smoking some?" he asks after watching me toke for 30 seconds.

God.
there where loads of other instances that night, SAd bastards
(Didn't give ANY away by the way)