Booyakasha

Salutaion.
Form of greeting and hello's

straight from the mouth of Ali G himself, in an interview with spin.com

Could you translate your catchphrases "booyakasha" and "wagwaan"?

"Booyakasha" means "listen up rudeboi everytin irie whayaso lickylicky ya wangagot fifiman." "Wagwaan" means "booyakasha."

"Booyakasha" is a catchphrase that is common among the Ninja Turtles, mostly by Michelangelo.

In the 2012 TV series it replaced the classic "Cowabunga", first used in the 1987 TV series.

It is pronounced /bu ˌjɑ .kɑ ˈʃɑ / (boo-YAH-kah-SHAH).

Booyakasha comes from the Irish word "buíochas" (pronounced bwee ah kuss) which mean "glory to" "or praise be" as in "buíochas le Dia" which means "thanks be to god". Oliver Cromwell sent 1000s of Irish to the plantations in Jamaica, and a lot of Irish (or Gaelic as non Irish people know it) words made it in to Jamaican patois. Another example is "Irie" from the Irish verb "Eirigh" (pronounced "Ire - ee") meaning to get up.

Don't know what it means but Ali G didn't make it up. Rapper KRS-One shouts it out at the beginning of "Keep Their Heads Ringin'" by Dr. Dre. In 1995. Before Ali G. Probably Jamaican roots then...

Fer Booyakasha mean a right many fings. But like fer da most part its a greetin innit. Iz use it all da time wit me posse.An When Me iz nobbin J Lo. straight up me aignt shitin you. Yo shout out bredren. Iz out Frek mez, Flamez.

Actually, since Ali G is Jewish and comes from Israel it means something totally different. In Hebrew there's a world called BEVAKASHA - which means 'Here you go' basically. So he made it into BOOYAKASHA.