[while Mongo is beating the hell out of a bar full of toughs, Bart walks in, dressed as a messenger boy and carrying a box]
Bart: Candygram for Mongo! Candygram for Mongo!
Mongo: Me Mongo.
Bart: Sign, please.
[Mongo grabs the paper and makes some rough scratches on it]
Bart: Thank you.
[He gives Mongo the box and walks out of the bar, putting his fingers in his ears]
Mongo: Mongo like candy.
[he opens the box - BOOM!]