Top definition
'Yo Gabba', a greeting often used when answering a phone call. The phrases origin directly relates to the strangely spasticated and addicting kid's t.v show 'Yo Gabba Gabba'. This word is often used to annoy fellow mates that dislike the show.
Esteban : 'Ay Esteban, what's going on mangz !'

Arturo : 'Yo Gabba !'

Esteban : 'What in the fuark was that bro ?'
by A2RO December 19, 2011
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