When one lesbian interferes between a lesbian trying to pursue another lesbian. The female form of cock blocking.
I would have gotten some pussy last night but this bitch was clam jamming me!
by Ryan and Ryan June 13, 2008
Can you define these popular missing words?
The act of lesbian lovemaking. See also scissoring.
I don't think Krissy and Melissa are dating; I think they're just clam jamming.
by Kitty Vicious December 01, 2007