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2.
A reference to sex. or the act of sex. Or, you could just be talking about eating pound cake. =]
"So what did you do last night?"

"I went out with Teddy."

"Oh really? What did you do?"

"Well, I pounded her cake and she pounded mine."

"You guys had sex?!"

"Yeah, we were pound cakin'."
by Nyla Sparks April 02, 2010
 
1.
when a man/woman cupcakes a person of the opposite sex who is over weight.
Yo, check out Ronald, he Pound Cakin' that big girl. Big Girls need to be Cup Caked too.
by dattebayo Danttebayo June 14, 2010