The concept of bumveloping, i.e., 'to bumvelop', originated from a discussion of the pentration vs envelopment argument. Bumvelopment is defined as an act of envelopment specifically utilising the anus as a means. Key to the understanding of bumvelopment is that it is in fact an act of dominance in the same sense that penetration has traditionally been seen as dominant.
"I bumveloped the man, like the bitch that he was."
by David Hogan September 18, 2006