To getsomeone's backup: when someone lashes out in anger at another person in response to a comment or statement they found extremely offensive or irritating.
He got my backup when he said those things. I called him a hypocrite.
That guy in SOCOM 3 that keeps pwning you. Derived from the way the opponents body flies backwards when shot with any of the various shotguns in the SOCOM trilogy.
"Man, ..backup.. keeps pwning me, that bama lags hard."