Tempting Fate/Newspaper Comics

Garfield likes to play with this trope. If someone says things can't get worse, they will (usually with Garfield warning not to say it). However, if a character admits things could get worse, they get worse.
- In December, 15, 2011, Garfield told a spider that was under a mistletoe to forget it and that he'd rather kiss a dog. Odie then showed up.
U.S. Acres played with this trope^{[dead link]} when it was a beautiful day and Orson said even Lanolin couldn't ruin it. To prove him wrong, she yelled she had just washed her car. It started raining soon after.
Peanuts has a few where the universe takes offense to a character's Badass Boast:
- In one arc, Linus gets a new hobby, drawing on air. Simply put, he traces things on air with his finger, and his imagination does the rest; he sees it as art, one that costs no money and needs no materials. However, he starts to enjoy it a little too much, saying "nothing can interrupt your work! Nothing, nothing!" And then it starts to rain.
- In another arc, Linus' hobby is building snowmen; he builds lots and lots of snowmen. However, he gets a little Drunk with Power, and starts talking to them like a general leading an army. "I am your leader!" he shouts to his "troops". "Stand behind me and you will be invincible! Nothing can stop us, nothing, nothing, NOTHING!" And then the sun comes out and melts them all.