The Wieners Circle in Chicago's Lincoln Park is well-known for good eats and bad attitudes.

The infamous hot dog stand is world-famous for serving up its signature char-grilled cuisine with a heaping side of verbal abuse.

For his last night in town, Conan O'Brien thought it might be fun to send the least offensive person he knows — Jack McBrayer AKA 30 Rock's Kenneth Parcell — into the rudest restaurant on Earth.

Little did the Wieners Circle staff know McBrayer was armed with a secret weapon: Triumph, the Insult Comic Dog.

Sit back, relax, and watch the expletives fly.