Banta Singh walks into a bar in Ludhiana & orders
three glasses of Beer and sits in the back of the room,
drinking a sip out of each one in turn. When he finishes them, he comes back to the bar and orders three more.
The bartender asks him, "You know, beer goes flat after I fill it in the glass; it would taste better if you bought one at a time."
Banta Singh replies, "Well, you see, I have two brothers. One is in Dubai, the other in Canada, and I'm here in Ludhiana. When they left home, we promised that we'd drink this way to remember the days when we drank together."