(Homer realizes that Thomas Edison has already invented safety legs for the back of a chair.)
Homer: (Shouting) Aww, damn it!
(Bart comes running down the basement stairs.)
Bart: Hey Dad, heard you swearin'. Mind if I join in? Crap, boobs, crap!
Homer: I thought I had a great idea, I must have seen it on this poster.
(Bart studies Homer's Thomas Edison invention chart.)
Bart: If Edison thought of that chair, how come it's not on this chart?
Homer: It's not? Maybe he never told anyone about it. (Points at Edison poster.) That chair might be the only one he made.
Bart: So?
Homer: So, we've got to go to the Edison Museum and smash it! Then I'll be an inventor!
Bart: But I thought you loved Edison.
Homer: Aw, to hell with him.
Bart: Yeah! Hell, damn, fart!
