Watch: Jimmy Fallon Marvels To Saoirse Ronan About His 'Lock-In' Experience In Kinsale

I suppose we should have seen it coming given his surname, but Jimmy Fallon is a bit of a sesh-merchant by all accounts.

In her interview on Late Night last night, Carlow actress Saoirse Ronan explained how American 'game nights' become so intense in comparison to nights back in Ireland, to which Fallon responded with a couple of questions about Irish sing-songs and pub lock-ins.

Indeed, the famed US talk-show host revealed that during his stay in Kinsale, Co. Cork, he was taken aback when the owners of the B'n'B in which he was staying invited him to stay for one last drink, with the "whole town" arriving in for a drink and the doors being locked behind him.

Ronan joked that the concept was designed to keep the gardaí out but most of the time they're in the pub themselves.