Booyakasha (catchphrase)

Booyakasha is a catchphrase mostly used by Michelangelo that replaced Cowabunga in TMNT 2012 TV series.

Used in:
I Think His Name Is Baxter Stockman

Metalhead (by Donatello)

New Girl In Town (by Raphael)

TCRI

The Good, The Bad and Casey Jones

Fungus Humungous

Metalhead Rewired

Trivia
Leonardo is so far the only Turtle that hasn't used the catchphrase.