look up any word, like the eiffel tower:
Pretty much synonymous with "whatever" (aspect of "yeah right")... often used in response to "halt mein"...
Person 1: I said that team was going to win.

Person 2: Waacka decka, no you didn't.

Person 3: Yes I did!
by jaguar7444 January 15, 2010

Words related to waacka decka

halt mein liar sure whatever yeah right