American Dad Wikia

Tweety, also known as Tweety Bird and Tweety Pie, is a fictional Yellow Canary in the Warner Bros. Looney Tunes and Merrie Melodies series of animated cartoons.

In "Jenny Fromdabloc", Principal Lewis attempts to sell belt buckles, one containing a bird that closely resembles Tweety Bird although Principal Lewis notes his eyes are red from smoking weed.

Stan wears a Tweety Bird undershirt at the Gold Nugget casino in "Casino Normale".

Stan provides Hayley with a basketball featuring Tweety Bird dressed in 'street' in "Yule. Tide. Repeat.".