A more kid-friendly version of " tear a new asshole" . It's a pirate-oriented version, and it means to either give someone a massive whooping or to give someone a massive scolding.
That makes me so angry I want to carve someone a new blowhole!
The Btown Blowhole is when you’re playing ping pong with a sexual partner and your paddle is essentially your asshole. You catch the ball in your asshole and poof it out like a whales blowhole and continue playing.
“Yo you tryna do the Btown Blowhole” “Yeah man let me get out my paddle ;)”