A "round of drinks" is a drink for everyone at the table or in your group of friends at the pub. It is normal for groups of friends to take turns to go to the bar and buy a "round" . You can say "I'll get the next round" or "I'll get the next round in". The "in" is optional and fairly colloquial. So a rough translation is: A: I'll go to the bar and buy drinks for everyone this time. B: Thanks. Or even "Cheers, mate" (between adult males) if you want to be really British about it.

A: You will buy a round of drinks. I have only ever heard it as, "I'll get this round." "I've got this round." B: Just a common toast like: На здоровье , Skål , Prosit. Outside of the pub it refers to the encouragement from a group. The crowd cheers for their favorite team. You can hear the cheers from the crowd.

It's a very British expression. It means you will buy a round of drinks. We don't say that in Canada :)

Oops. I wrote in the wrong spot.