In the episode where Homer gets a 300 in bowling and he gets a balloon with a "300" (no quotes) in it, look where he is trying to get...that baby off the clothesline. When she is pulled up to Homer, she is hanging on a clothespin, but when he grabs her, it mysteriously disappears!
Also, at the end of that episode, Homer gets a 296 and Maggie gets a 296 in a bowling game.But then a balloon appears that says 300,like the one Homer gets at the beginning of the episode.Neither of them got an 300, so why does that balloon appear?
Dr Eeek, Homer was altering Maggie's score. Once she bowled a strike and he claimed that she went over the line or something, so he gave her like an 8. It's very possible that Maggie had bowled a perfect game and Homer was repeatedly changing her score.