"He's big, he's dumb, he's got the IQ of gum, he's got the brain about the size of a sourdough crumb! But he'll beat on your head, like a big-bass drum! His behavior is truly unruly; He's a Bully!" — Ending lyrics of the song He's a Bully[source]
"Buford loves this!" — Buford's catchphrase
Buford Van Stomm is a bully in the town of Danville that joins Phineas and Ferb on their adventures.