to get knocked out or beat up, similar to get banged out or get dropped

Somebody either doing cocaine or trading cocaine mostly heard in U.K.

'Get a rock on' is phrase that someone would use after another person has said something to them that has no relelvance to them.

To get violently rocked (preferrably by Sir Elton John himself) as crocodile rock plays in the background.

To have an orgasm. The word 'rocks' can be compared to the testicles of the male, but the phrase also applies to females. See also bust a nut.

when a man releases his cum