Green’s Dictionary of Slang

flah v.

also fla, flaa
[Irish fleadh, a party (pron. ‘flah’)]

(Irish) to have sexual intercourse.

[Ire](con. 1970) G. Moxley Danti-Dan in McGuinness Dazzling Dark (1996) I iv: Yeah, we’re saving ... then I can flah you cross-eyed whenever I like.
[Ire]Share Slanguage.
[Ire]G. Coughlan Everyday Eng. and Sl. 🌐 Fla/Flah (v): to have sexual intercourse with someone ( From Irish ‘Fleadh’ meaning party).
[Ire]L. McInerney Blood Miracles 129: ‘I had to leave the chickie I was all set to be flahing tonight’.
[Ire]L. McInerney Rules of Revelation 156: Were you flahing her, too? That Izzy wan? Is that her problem with you?’ ‘I was not fucking flahing her,’ he spat.

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