I was sitting in my living room just now, and the laser printer automatically readjusted like it does every couple hours or so, making a noise like it's printing something. The proceeding conversation went on as follows:
Dad: Uh-oh.
Me: It's the ghost.
Dad: A printing ghost.
Me: ...the PRINTERgeist :D
The horrific nature of this pun made my dad and my sister chuckle.
Discuss. Maybe share other bad puns, if you so desire.