In Shakespeare's time, mattresses were secured on bed frames by ropes.
When you pulled on the ropes the mattress tightened, making the bed
firmer to sleep on. That's where the phrase, "goodnight, sleep tight"
came from.

A whole bunch of us were sitting around my house talking and we 
were trying to remember a guy's name. None of us could remember 
his name at all when all of a sudden my friend yells, "Dick!". 
We said yes that's it. Then she said "Boy, I pulled that one 
out of my ass". No one said anything until I burst out laughing 
and she said "You had to go there didn't you?"

When George W. Bush was asked if he knew what Roe versus Wade was,
he said he thought it was the decision that General George Washington 
needed to make when he planned to cross the Delaware.