A bit nippy 'round the bippy

adj.

Heard in Tipperary

Like nippy, it is describing a cold day or something rather cold.

In use

John: "Jaysus its cold today" Tom: "Yeah, its a bit nippy 'round the bippy"

Posh English

Good heavens, the weather is decidedly brisk today. Yes, it is rather chilly about the nether regions.