The phrase often said when two people are making mean comments back and forth (beaking) and one of the two lands an amazing comeback or gives out a good one it is referred to as sick beaks.
A cripple: get your ass out of the way im trying to get threw here!
a guy: shut it dead legs im going
the cripple: Hey asshole i may not be able to move my legs but at least i have all THREE of mine.
The cripple just landed a SICK BEAK
The cripple if he had a friend would most likely yell "oh man, "sick beaks"