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A belly wart is when you pull one of your testicles up above your pants. -while wearing you pants normally. Your nut, whichever one you chose to pull up, looks like a huge wart right above your belt.
Dude- "Yo bitch, did I ever show you my belly wart?"

Bitch- "Belly wart? No you haven't."

Dude- "Check it, I have had it since I was born."

Bitch- "Ewww, WTF Dude!"

Dude- "Aha, dumb bitch."
by Trip Jax June 17, 2009