Have you ever accidentally broken something whilst gaming?
The worst for me has to be breaking two chairs whilst playing a two player game on the Amiga many years ago with a friend, I think the game was Double Dragon 2.
We were trying to complete the game and in our frantic joystick frenzy we failed to notice how loose the joints were in the two antique chairs we were using. During the gameplay I suddenly disappeared through the seat, ending up on the floor with my legs sticking up through the chair.
My friend laughed so much that his chair followed and the back flew off, leaving him on the floor too. My parents ran up the stairs to find us both in a mess of chair parts on the floor. That was funny.