Title pretty much sums it up. Here's two of them and stop me if you heard them before:
A neutron walks into a bar. "I'd like a beer" he says. The bartender promptly serves up a beer."How much will that be?" asks the neutron. "For you?" replies the bartender, "no charge".
There are 10 kinds of people in this world:
Those who know binary code and those who don't.