Have a cup of tea.

Thank you Su.Ki :) I will make more specific offers to Americans ☕🍪

And not that you asked, either, but 'get (and drink) a beer' would be 'Grab a pint' in the UK. 'Grab a brew' would be a cup of tea in Britain, as Alex has explained. Some scope for misunderstanding there, I fear. Offer a 'brew' to an American, he'd expect a cold beer and would be very surprised (and disappointed) to be presented with a cup of hot milky tea!

Thank you:)

Not that you asked, but in the US, that means to get (and drink) a beer.