When you punch yourself in the balls as hard as you can to kill the sperm right before you ejaculate into a woman's vagina as to avoid other forms of birth control.
"Wow, the punching bag I gave myself last night hurt, but not as bad as 18 years of child support would have."
by Kyle Willinger April 02, 2007
Can you define these popular missing words?
n. The act of taking a used condom, tying it at the end (resembling a real punching bag), and pummelling one's parter in the face with it until it breaks and the semen inside explodes on her face.
In exchange for a rowdy round of sex, John gave Betsy the punching bag.
by Bryce H. April 24, 2003