Answer:
A sound made when some one smells axe on you
An axe theme commercial. When a guy wears it and passes by a girl, the girl goes, "Bow chicka wow wow!!"
It's hilarious! ]
also Off Cartoons like Phineas and ferb (bow chica wow wow song) i luv dat song bow chica wow wow that's what my baby said
and a cartoon film ^^^^^^^^^^^^^^^^^
Also from Alvin and the chipmonks movie
Also seen in Red Vs Blue by Tucker
Example:
Tex: Everyone get behind me, and stay tight!
Tucker: Bow-Chicka-Wow-Wow.
Tex: Okay Tucker's going first
Tucker: Eh, it was worth it
it is also from Alvin and the chipmunks