Weird Drinker

A man walks into a bar. He walks up the wall, across the ceiling, spins around and black flips off the ceiling onto the bar stool. He orders a whiskey, drinks it and then stand on a table, jumps onto the chandleir and swing out the window.

A fellow drinker says:
"Woah that was weird" and the barman says:
"I'll say! He normally orders a Guiness!"