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The act of having anal sex. Most commonly used when referring to a particularly fucked-up act of sodomy, such as when a priest fucks an alterboy, or a trusted male authority such as a coach, mentor, or big brother takes advantage of a young boy in their charge.
Armand: Hey Sam, did you hear about that priest who got arrested the other day?

Lance: Oh, you mean the one who was bumsleazing the young boys in the choir?
by Randy Gnome December 06, 2011
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