Homer: (Wearing glasses) The sum of the square roots of any two sides of an isosceles triangle is equal to the square root of the remaining side!
Man: (From inside a bathroom stall.) That's a right triangle, you idiot!
Homer: D'oh!

Mr. Burns: (reading Homer's letter) "Dear Mr. Burns. I'm so glad you enjoyed my son's blood, and your card was just great." Why Simpson, you've made my day, you're a true gentlemen.
Homer: Well I-
Mr. Burns: Hello, there's more. (continues reading) "In case you can't tell, I'm being sarcastic. You stink! You are a senile bucktoothed old mummy with bony girl arms and you smell like an elephant's butt!"

Homer: Aw, twenty dollars? I wanted a peanut!
Homer's Brain: Twenty dollars can buy many peanuts.
Homer: Explain how!
Homer's Brain: Money can be exchanged for goods and services.

(After Homer rejects other names for boys based on rhyming nicknames)
Marge: What about Bart?
Homer: Let's see. Bart, dart, cart, e-art. Nope can't see any problems with that.
(Missing fart due to only 4 fingers)

(reading his poem)
There once was a rapping tomato,
That's right I said rapping tomato,
He rapped all day from April to May,
And also guess what, it was me.

Just because I don't care doesn't mean that I don't understand.

You tutor? And anyone can be tooted?

Hello, operator! Give me the number for 911!

Who wants feet steak?

Another day, another box of stolen pens.

Uh ... Apu friend me good.

Heh, heh. Shazzam.

The Simpsons Quotes

Sir, I got carsick in your office.

Ralph

Homer: (Wearing glasses) The sum of the square roots of any two sides of an isosceles triangle is equal to the square root of the remaining side!
Man: (From inside a bathroom stall.) That's a right triangle, you idiot!
Homer: D'oh!