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1.
using a foreign object (such as a pair of socks, cucumber, pickle, etc.) inside your pants as a means to make females think you have a big schlong. refers to baseball; when using a bat that has been "corked" the ball is hit harder and farther, but you can't tell the bat is "corked" unless it breaks (i.e a girl pulls down your pants.). when that happens you look pathetic
College Guy 1: I'm going to an awesome party tonight, there's gonna be hot chicks everywhere!

College Guy 2: I heard you had a "problem." You should try corking the bat to make the chicks think youre huge. Just don't get with them tonight, just get them numbers!
by phenomenalphalanx February 19, 2011
 
2.
dildo insertion into the head of the penis well into the urethra (utilizing a pumping action) for the purpose of sexual gratification.
man, that carzy chick corked my bat something fierce. I cannot urinate with ease at the moment.
by david baas June 24, 2003