Hulky

A consequence of the letters "b" and "h" being adjacent on the qwerty keyboard layout. It is used accidentally in place of the word "bulky" to confer the same meaning, only more exaggerated.

Person 1: "butt pngs tend to be hulky"
Person 2: "Did you mean "but pngs tend to be bulky"?"
Person 1: "I meant what I wrote!"