Pejorative applied to someone who doesn't have much capacity for thinking. Can also be a little bit of a prick.

I’m a rhyming compound word who works hard so your hands are free. Sure, I may make you look like Quasimodo, but. . .

You might find me in a pack, Though I'm not part of the main group. I'm often foiled by a bat. And I'm the one who can't be serious.

I had to do this to make this riddle be You now have to do this to guess for XP

Melons always have to have huge weddings, because they can’t