look up any word, like sex:
 
1.
The most intelligent/maniacal/deviant one-year-old you will ever see in your life, and clearly the best character on Family Guy. Seth MacFarlane is such a damn genius.
"So, is there any tread left on the tires? Or at this point would it be like throwing a hot dog down a hallway?"

Stewie is a bad-ass muthaf****. Don't mess with the best.
by paper and pantry October 05, 2005
 
2.
Stewie Is The The Baby On The Family Guy, In My Opinion The Funniest Show Ever
The Life Of The Wife Is Ended By The Knife.- Stewie Trying To Teach Eliza To Talk Right
by jdawg12 July 30, 2005
 
3.
Stewie is along the lines of hyphy, mainy, & ignorant.
(It's that bay area lingo.)
I'm feelin' real stewie today.

John is lookin' real stewie.
by jz24 March 17, 2006
 
4.
noun.
A semi-erect penis.

verb.
To have sex with someone with a semi and leave halfway through.
How did it go with Joe last night?

Fucking terrible. The bastard stewied me.
by Jil-dawg April 26, 2014
 
5.
Petter Griffon's son on Family Guy
Stewie just said that!
by WillyRob October 27, 2011