Geek Humor!

A virus walks into a bar.
The bartender says, "We don't serve viruses in this bar."
The virus replaces the bartender and says "Now we do!"

Two bacteria walk into a bar.
The bartender says, "We don't serve bacteria in this bar"
The bacteria say, "But we work here! We're staph!"

An infrared photon walks into a bar and asks, "Is it hot in here, or is it just me?"

A neutrino walks into a bar...

Schroedinger's cat walks into a bar...