Top Definition
when sisters are pregnant with the same man's children. cousin siblings
my sister and I got knocked up with my boyfriend during that three way we had. I can't wait for our cublings to be born!
by Roberto Swarlos March 30, 2009
placing testicles in the mouth simultaneously with the penis during felatio
Aimee was expert at cubling while blowing Mike.
by slowmike January 16, 2006

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