Onimonapia (meaning word that is spelled like a sound) that is supposed to stand for 70's guitar Porn-riff. Usually this is the music that came on when the action was just about to get started. It has been used in a subcultural context to denote any porn-like or pornified situation.
Your friend picks up an extra large sausage. This is a great time to sing Bow Chicka Wah Wah.
You see a hot guy/girl that you could imagine yourself in a porn with. Also a good time to sing Bow Chicka Wah Wah.