A fagish term used to describe the action of booming your jam in a mans butt hole. Historians have traced it origin back to ancient times when the Jesus Christ first had a man on man encounter with St. Peter. Although this fact is shunned by the Catholic Church it is now becoming more and more common to the educated. To sum things up, saying this word makes you a well known homosexual.
I'm such a fag that I say boomjam.