Gumbo's Knob

An expression used to insult men with tiny penises, with great sarcasm, as no-one has got a cock the massive size of Gumbo.

Commonly used phrases include:

Your cock is tiny compared to Gumbo's Knob.

Gumbo's Knob is just the best.

I absolutely need something as huge as Gumbo's Knob.

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