A neutrino walked into a bar. The bartender asked, "May I help you?" The neutrino replied, "No thanks. Just passing through."
Two bacteria walk into a bar. The bartender says, "We don't allow bacteria in here." The bacteria say, "But we work here. We're staph."
A virus walks into a bar. The bartender says, "We don't serve viruses here. So the virus infects the bartender and says, "Now we do."
An infectious disease walks into a bar. The bartender says, "We don't serve your kind here. The infectious disease says, "Well, you're not a very good host."
A room-temperature semiconductor walks into a bar. The bartender says, "We don't serve room-temperature semiconductors." And the room-temperature semiconductor leaves without any resistance.
Schrodinger's cat walks into a bar. And doesn't.