Clasping the hands together palm-to-palm, insert wet (preferably brined) hands in the anus of partner, and proceed to open and close the hands as if they are a clam, using the wrists as a hinge of sorts.
Clifford’s female companion smelled of fish, so in the spirit of the sea, he hand clammed that ass until he got a brown pearl.
After performing a creampie, a female goes into a reverse tea bag (female tea bagging a male), she squeezes the cream out of the pie onto said males face, she then drops smacking HER clam (forcefully) on his face
Last night I surprised my boyfriend with a Rhode Island Clam Cake!!! Chowda on the side!