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.

n. a assclam is a person who, is always wrong talks shit and falls on his cock

where your ass is wetter than swamp ass and it has the stank ass odor.

Excessively cheap and tightfisted with money.