I’ve heard the term “vinegar stroke” in reference to the last stroke before ejaculation. Why “vinegar”?
I believe it refers to the strained facial expression - as if one were tasting vinegar.
Ah! That makes some sense, thanks.
Ah: A Viz-ism. I’ve always taken it to refer to ejaculation: a visual allusion to shaking vinegar from a bottle (the narrow-spouted kind used in the UK to sprinkle little squirts of vinegar on chips).
More like G-ism.
NOT a good visual being imaged here…