the bulge that is divulged in the crotch area by various objects (i.e. an erect penis, socks, pants, puppets, etc.)
Mackinley was so drawn to Mike's crotchbulge that she pulled down his pants, only to discover a sock puppet inside.
by Schnizzle July 22, 2004
My wife got a nasty crotchbulge last week while I was reading in the shitter. I didn't get sex for a week because of that!
by Pea Tear Griffyn August 10, 2004