Irish Triplets

Mick, Paddy, and Tat are in their local pub having a drink.

One of the locals come over to them and asks "are you three triplets?

Paddy replies yes"

The local asks "well how come you and Mick are six foot tall, and Tat is only four foot six?

Paddy says "ah you see me and Mick were breast fed, but there was no Tit for Tat."