Worm tent

A mild to moderate morning erection.

ie. waking up next to a grenade.
ie. after a night of doing cocaine off of strippers titties.
ie. when Viagra begins to wears off.

Niko: "Bro, you check out that girl I took home last night?"

Ivo: "Yea, my dude. I bet you woke up with a worm tent this morning, huh? Bitch was busted."

Kristen: "girl, I woke up tryin to hop up on that dick and do a full split but this hitta had a mutha fuckin worm tent."

Ana: "what a waste."