"Booyakasha" is a catchphrase that is common among the Ninja Turtles, but mostly used by Michelangelo, in the 2012 TV series. It replaced the classic "Cowabunga", first used in the 1987 TV series. It is pronounced /buːˌjɑː.kɑːˈʃɑː/ (boo-YAH-kah-SHAH).
- Metalhead - First time being used by Donatello
- New Girl in Town - First time being used by Raphael
- Enemy of My Enemy - Mikey admits to Karai he doesn't know what it means, but it's fun to yell.
According to Greg Cipes in an interview, "Booyakasha!" is an Irish saying that means "High Glory and love to the very moment." It is likely derived from "buíochas", which means "glory to", or its archaic version, "buidheachas".
"Booyakasha" as its own word was originally coined by comedian Sacha Baron Cohen as part of his of satirical fictional persona Ali G. Ali G's use of "Booyakasha" is a faux Jamaican Patois expression of triumph (some Jamaican Patois words have Irish base origins, so the two origins may be compatible).
- It replaced Michelangelo's catchphrase in the 80's original series was "Cowabunga".
- Mikey thinks it sounds weird when Donnie says it. But Raph thinks it sounds weird when Mikey says it
- Leonardo so far is the only turtle who had not said the catchphrase yet.
- Showdown, the two-part Season 1 finale, was promoted as "Booyaka-Showdown".
- Mikey tells Mondo Gecko that he considers the phrase 'Cowabunga!' to be too 'old school', which is why he prefers 'Booyakasha!' instead.
- But prior to Meet Mondo Gecko, Mikey has been heard saying "Cowabunga!".