Slang from the city of Glasgow, Scotland meaning 'ice-cream cone' but specifically an ice-cream cone with a wafer triangular base/handle, hence the hat metaphor.
"Ma, the ice-cream van is outside, d'ye want anything?"

"Aye, get me and yer Da a pokey hat and get an oyster for yer wee sister". ice-cream ice-cream cone confectionary ice-cream van .
by JM74 December 21, 2014
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To have a sharp defecation after a curry and a beer.
Gale had to drop and knock out a pokey hat after her Jalfrazi.
by Kibbsy May 7, 2022
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