What do people do while smoking that angers you?

[huh]

when someone blows out to cough while they still have the pipe/bong by there mouth which leads to all the bud (sometimes still lit) flying though the air.

i did that 1 time when i first started smoking. it was the combination of a cough and a laugh at the same time. i felt so bad after that. but that was about 3 or 4 years ago so i try to forget about it :P

the one thing i hate the most is when people get the pipe and just hold it and keep talking....i mean hit the pipe and pass it THEN talk.