i also hate when i walk up to a customer at work (i'm a ski/board salesman) and try to break the ice and say 'hey, how's it goin sir', and he says 'no, just looking' as if i'm trying to jump on the sales pitch immediately like i'm some sort of creep. fuck that. i hate having to go into work every damn day and deal with bitchy a-holes.
and yet ANOTHER thing that irritates the fuck out of me, is when you try to break the ice with some chicks at a bar or club and they immediately assume you're trying to get in their pants right there so they  shrug you off in no time. i'm just out to have a good time, chill with some people, maybe something will happen after that, who knows, but you don't have to be a stuck up bitch when i'm just tryin to be a nice guy.
so bottom line, it's when people assume you're a creep or just like the rest of the older shmuck dudes that just want to fuck a bitch and leave. people that assume, suck.