"Ok, go ahead and roll to attack."
Your d20 goes bumbling across the scarred tabletop and you look on anticipating the merciless smack down you're about to lay. It comes to a stop. Your eyes widen. Your friend snickers to your right. It's... a one.
"NO! Crap! What?!" You sputter.
"Oohh dang..." Says the DM semi sympathetically. "Your sword makes a glittering arc but gets tangled in the chain of your enemies' morning star. Sparks fly as the beautiful blade snaps like a dry branch and you lurch backwards on your back, stunned."
"I hate this game." You mutter. You lie.