The most important drinking rule in Canadia

A Mexican drinks his beer and suddenly throws his glass in the air,
pulls out his pistol and shoots the glass to pieces. He says, "In
Mexico our glasses so cheap we don't need to drink from the same glass
twice."

An Iraqi, obviously impressed by this, drinks his beer, throws his
glass into the air, pulls out his AK-47 and shoots the glass to pieces.
He says, "In Iraq we have so much sand to make glasses that we don't
need to drink out of the same glass twice either."

The Canadian boy, cool as a cucumber, picks up his beer and drinks it,
throws his glass into the air, pulls out his gun and shoots the Mexican
and the Iraqi, and catches his glass.

He says, "In Canada we have so many illegal Mexicans and Arabs that we don't have to drink with the same ones twice."