An Assclam is the walk a person does when they have to go to the bathroom. Holding their asscheeks tightly together, like a clam. Sometimes snapping them together quickly to avoid smudge marks. An insult to a person whom walks, or acts funny.
Hey look Chrissy! That guy is an ass clam,I hope he shits himself real good.
Look at his ass clam, he must have to pinch one off, you know sally?
Look at his ass clam, he must have to pinch one off, you know sally?
by ANewRetrospect February 17, 2006
Get the ass clammug. by mrladiesman July 13, 2009
Get the bearded clammug. 
The comparative term to the male "cock block." It means to effectively stop a female companion from getting laid.
I was gonna bring this hot guy back to my apartment, but my bitch roommate decided to pull a clam jack.
by Lon December 28, 2005
Get the clam jackmug. The rear view of a vagina when a woman is standing up straight with her legs slightly spread. The best view of a dangling clam is when one kneels so that his or her head is slightly below the woman's butt cheeks. This view is so named because the vagina in this state looks remarkably similar to a clam that is hanging and has it's widest face facing perpendicularly towards a person's eyes.
Yo Brian, check out that hot dangling clam over there. We can all see her vagina and she is none the wiser because she isn't even bent over. Fuckin' clam bake over here.
by Bonny LeBaron April 30, 2011
Get the Dangling Clammug. Her bearded clam was closed, but I pried it open with my fingers, transferred her love juices to the head of my dick, and gently began to slip it to her.
by John R. January 2, 2004
Get the bearded clammug. "She's ugly, but she's paying my rent, so I had to give her a clam cram to get it over with quickly"
by TooSmooth August 10, 2012
Get the clam crammug.