Ships in a Bottle

S2, E36: While Eagle and Hawk lug crates of empty Fizzy Fuel Pop bottles down to the recycling center in the basement, they chat animatedly about the big upcoming return performance by the Rooster Rockets. In his excitement, Hawk executes a whirly Rooster move, igniting his afterburner - which accidentally seals the metal door shut. Despite their best efforts the door won't budge, and no one's receiving their radio signals from the deep underground room. And there's no other way out! Hoping someone will realize they're missing and come looking for them, they reminisce about other goofs and blunders from the past, which we see in flashback. Eventually Eagle and Hawk realize they need to save themselves... so they try to tap on an exhaust vent until Coot hears it up above. Rescued!