stoat-the-baw, n. — Green’s Dictionary of Slang

stoat-the-baw n.

[? Scot. stoat/stot, a bullock or SE stoat; but stoat = hit, and lit. ‘translation’ is ‘bounce-the-ball’ (poss. associated with the image of patting the young person reassuringly on the head) so poss. just a fool, cognate with head-the-ball]

(Scot.) a statutory rapist or paedophile; a man who has intercourse with a girl below the legal age of consent.

1994		I. Welsh ‘A Smart Cunt’ in Acid House 185: – Stoat the baw. [...] – Ah heard that the lassie was sixteen.
1998		I. Welsh Filth 88: Judges are coming doon hard as fuck on stoat-the-baws.
2012		(con. 1980s) I. Welsh Skagboys 512: The radge jis looked like a fuckin short-eyes n aw, hud stoat written aw ower um.
2013		T. Black Ringer [ebook] n.p.: One member of the family being cried a stoat-the-ball is enough.