An infectious disease walks into a bar

[PokerMan]

and the barman says 'we don't serve infectious diseases in this bar.' The infectious disease says, 'well, you're a not a very good host.'

A room-temperature super conductor walks into a bar and the barman says 'we don't serve room-temperature super conductors in this bar.' So, the room-temperature super conductor leaves without putting up any resistance.

A neutrino walks into a bar and the barman says 'we don't serve neutrinos in this bar.' The neutrino says, 'that's ok - i was just passing through'.

Schrodinger's cat walks into a bar................ and doesn't.

[kawakiri]

The Mal(l)ow I referred to.

http://www.youtube.com/watch?v=e7DkeQ0roAM

Science comedian