A playful name for one's cock and balls, whereby, 'Steve' refers to the todger and 'the twins' are the attached danglies.
Man in bar: 'fancy coming back to my place, I'd like to introduce you to some of the family?'
Woman in bar: ' Who would that be?'
Man: 'Steve and the twins'
Woman: You mean your cock don't you?
Man: 'Erm, yes, guy's gotta try right?'
by Smellynappybaby November 18, 2016
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