ramming the clam Share definition Flag A slang term used for female masturbation, esp. when using a sex toy such as a vibrator. Dude, I accidentally walked in on my sister ramming the clam last night. I'm going to be having nightmares for months. ramming the clam by aoedima June 10, 2012 0 0 Get merch Get the ramming the clam mug. Buy Now — $32.95 See more merch