1 definition by Hahaharry balls
The act of putting a bent beer bottle cap (resembles the clam) or pop tab in someone's beverage. It's great fun at a get together, seeing who can clam the most people or just one person in particular many times.
Bob: You should go clamming. Clam Suzy, bro, she got me earlier
Bryan: Alright!
*Bryan walks past Suzy's drink sitting on the table and drops a "clam" in while she isn't paying attention*
*Suzy takes a sip of her beer*
Suzy: WTF, who clammed me?!
Bryan: Alright!
*Bryan walks past Suzy's drink sitting on the table and drops a "clam" in while she isn't paying attention*
*Suzy takes a sip of her beer*
Suzy: WTF, who clammed me?!
by Hahaharry balls October 22, 2013