Me and pooky did it in CE with tanks. Several servers we went into some guy would be raging in all caps. He'd try contantly rush our base trying to cap. He'd bump over the hill right of front of blue base only to be slammed with 2 tank shells. Guy raged so fucking hard.

My idea of griefing in BF3 is targeting the same fuck over and over again because either:

A: he had the audacity to try and do something dangerous but failed
B: Was being a general cunt so I cut him off at every turn.