I have no problem with regional usage. In fact, as big as the U.S. is, we have many verbal variances. Coca-cola is soda where I am, but it's pop 3 hours west in Pittsburgh. Years ago in Ireland I got a kick out of the fact that it was referred to as chilled minerals.
I was just curious as to how widespread the use of the term wee is. Here, if urine is referred to as wee, it is usually used by children, as in "wee-wee."

I am a fan of your use of the words bangers and bum.

By the way, DeNiro did spell diaper correctly.