A term to discribe the breaking of a combonation of multipule posts on an internet message board, or in a chat.
Usuauly the post is just a simple bolded "C-C-C-C-Combo breaker!"

Combo Breaker: noun, while doing combos in game, Killer Instinct, break someones combo by tapping the block button.( + -- .'.' ) <-- snes crap controller tap the y button repeatedly till breaking combo succesfully.

Reversal move used in Killer Instinct (Iconic mid-90s beat 'em up videogame) to stop your opponent in mid-combo (chained attacks). This reversal is punctuated by the announcer shouting "COMBO BREAKER!"

A Combo Breaker is an instantaneous deviation from the regular pattern of vaginal intercourse to the anal route - generally done unexpectedly, and almost always to the female party's detriment.

when you accidentally get a chick pregnant