The story
From peat + -y. Slang sense attested circa late 2010s at earliest, often apparently mildly tongue-in-cheek.
Etymology from Wiktionary, CC BY-SA 4.0.
peaty
Today it means: Of or resembling peat; peatlike. Full definition →
Today it means: Of or resembling peat; peatlike. Full definition →
From peat + -y. Slang sense attested circa late 2010s at earliest, often apparently mildly tongue-in-cheek.
Etymology from Wiktionary, CC BY-SA 4.0.