Top Definition
A exclamation either when the exclamator destroys something or does something wicked awesome.It is usually screamed when something is set on fire or exploded. it is also screamed when somebody does a stunt or a backflip or......something cool......like that.
(throws a 20 pack of fire crackers into a bon fire. this results in large noises and lotsa, lotsa explosions)Random Dude: Boomshackalacka
by samuel wood August 06, 2006

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It's when you anal a girl and then she gives you a blow job.
Turc: Hey dude, my girlfriend's breath smells like shit!
Schu: Why?
Turc: Because I boom shacka lacka'ed her last night.
by BORAT SAGDIYEV March 29, 2009

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to eat cow dung or a celebration
i want to boomshackalacka
by himshona September 26, 2007

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