comes from Hebrew: "bo nishev al..."
same as to ask someone to join you for a meal or to smoke a
cigarette (most
popular usage), but can be used
almost in every "join-me-situation"
1: Hey man,we've got a break now - let's sit on a
cigarette!
2: No thanks, i
don't smoke.
1: I'm hungry, do you know some place to eat?
2:
Yes, its an Italian restaurant, let's sit on some good pasta there.