A man walked into a bar and said to the bartender

A man walked into a bar and said to the bartender: “Give me a beer before the arguments start.”

The bartender poured him a beer.

A couple of minutes later, the man said again: “Give me a beer before the arguments start.”

The bartender poured him another beer.

A few minutes later, the man said for a third time: “Give me a beer before the arguments start.”

Thoroughly confused, the bartender said: “Excuse me, when are you going to pay for all these beers?”

The man said: “Now the arguments start.”