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".
A tachyon walks backwards out of a bar.
Schr?dinger's cat walks into a bar and it doesn't.
An infra-red photon walks into a bar and says "Is it hot in here or is it just me?"
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."
A neutrino walks into a bar. The bartender says "We don't serve neutrinos in this bar" and the neutrino says "Whatever, I was just passing through."
A room temperature superconductor walks into a bar. The bartender says "We don't serve any kind of superconductors in here" and the room temperature superconductor leaves without putting up any resistance.