WHEN IN ROME, you do as the Romans do. When in Dublin, you sit down and have a pint with us.

So naturally, that’s just what the Backstreet Boys did before their show in Dublin’s 02 last night.

Nick Carter was spotted belting out some tunes in Bad Bobs on Sunday night, but the whole gang joined him in Ireland’s oldest pub, the Brazen Head, for a few pints of Guinness yesterday evening.

Look at them! Delighted with themselves.

Facebook / The Brazen Head Facebook / The Brazen Head / The Brazen Head

Howie posted this snap of his FIRST EVER PINT on Instagram:

Instagram / howie_dorough Instagram / howie_dorough / howie_dorough

In Dublin, Ireland and having my first Guinness! This is the best and only place in the world to have it in my opinion.

You’re damn right, Howie.

After tearing up the stage at the O2, BSB still had the energy to go mad at the post-show party. Some lads.

Read: You missed the Backstreet Boys singing in a Dublin pub last night>