According to a KPTV newscast, a Simpsons fan with too much time on his hands grafted a tobacco plant and a tomato plant and, ta-da: tomacco!

Bart: Bleh! Tastes like cigarette butts.

Marge: [takes the half-eaten "tomato"] That's odd. The outside looks like a tomato, but the inside is brown.

Lisa: Maybe the tomato seeds crossbred with the tobacco seeds.

Homer: Oh, great, I've got a field full of mutants.

Bart: Gimmie. I want more. [grabs back the tomato and eats it]

Lisa: I thought you said it tasted terrible.

Bart: It does. [grinds out the remains of the first tomato] But it's smooth and mild. [grabs another] And refreshingly addictive.

Homer: Addictive, eh?

Simpsons Fan Creates Real Tomacco Plant