I have been accused of hacking because, in Cucumberdude's Crossfire TDM (at least I believe it was Cucumberdude's, I shall have to check) I shot and killed a member of the opposite team with an OSR in scope, after the opponent in question ducked...
...Behind a handrail.
This handrail, of course, had many spaces in between the bars, and when he was hit through one of these spaces, I believe something like the following ensued.
"DUDE WTF I CROUCHED! HACKER!!"