Anyone know a good joke?

[LordSappington]

So a neutron walks into a bar, and orders a beer. A little while later, he finshes it and asks the bartender, 'What do I owe you?' The bartender looks it over and says, 'For you, no charge.'
This has been: MasterGeek Theatre.

[Jeanette X]

Q. How many mice does it take to screw in a light bulb?

A. Just two, but good luck getting them in there.