Tadhg Og

When one uses the excuse "nah, bate" to avoid attending a group social occasion such as drinking or playing poker (or a combination of both activities) and instead stays at home drinking green tea and watching big brother.

Friend 1: Lads where's Paidi, did anyone ask him to come out tonight?
Friend 2: Ya I was onto him alright, he's pulling a Tadhg Og on it, pal.