выпьем пива

let's have a beer

→ выпить
phrase Rare #43,384
let's have a beer A casual invitation to drink some beer. The genitive пива means “some beer” or an unspecified amount of beer.
RU: После работы выпьем пива?
EN: Shall we have a beer after work?

Выпьем пива.

Let's have a beer.

— Рука Бога (2021)

Выпьем пива!

Let's drink some beer!

— Мамочка (2014)

Да ладно, посиди немного, выпьем пива, по чуть-чуть!

Come on, stick around for a bit—we’ll have a beer or two, just a little at a time!

— Мамочка (2014)

Давай, выпьем пива!

Let's have some beer!

— Мамочка (2014)