Someone that is too pussy to deal with life's shit head on. Instead they always take cheap shots, and the easy way out, instead of buckling down and facing reality like a man.
"wes, I dont think stabbing your little brother in the back is going to solve any of your problems your so pussive agressive".
"bullshit dude watch"
-throws unsuspecting little brother down a flight of stairs, to later have his ass whooped at a party for being so gay".
The act of using typing an angry(ish) message to someone but adding 'lol' to the end in order not to come off as angry/ irritated despite actually being angry/ irritated.
Being passive aggressive is eating the last piece of your brothers cake.. not because you wanted it. Just because he pissed you off earlier and you knew he wanted it.