It's the drum roll that accentuates a stand-up comic's punch line. It is often spoken to make obvious that something stated was intended to be a pun or a joke. One or the other is usually used -- badabing or badaboom.
Q: What instrument do fish like to play? A: A bass guitar. Badabing, badaboom!
by Billobillo September 10, 2007
an overused expression from illiterate morons that ape pretend Mafia language. Usually associated with B or C list 'sellebrities'
that wise-guy wannabe kept trying to work bada bing, bada boom into the conversation, but it was apparent that he should stick to delivering pizzas
by Get Literate September 03, 2005
a word that a certain student at our school likes to say all the time when he is in a nervous situation or..well..any other time. He also needs to cut his fucking finger nails.
"hey you, hey you, i got a 15% on my geometry test, bada bing, bada boom"
by newyorker987345 April 29, 2009