I believe theyre referring to the usual two-finger-fuck-you. As in v for victory.

If you take that same sign and press it to your lips you get a gesture recognised as “eating pussy” when accompanied by some tongue action through the V of your fingers.

Welcome to the party pal - where you get downvoted because you thought the word used to marginalise gay people had fallen out of favour…along with poof and bender.

So we’re still using nonce then?