Used to express approval or to show that you are in agreement with an idea, or what someone is saying. Possibly originating from the scout repeat song, "Boom Chica Boom."
Dude, did you see Anna Kornikova in the SI Swimsuit Edition?! I'd like to crawl all over that! Boom Chica!
by Jeremy W. February 19, 2004
Get the boom chicamug.