It's when men's nipples look like oversized pencil erasers. Permanently hard. If they're wearing a t-shirt you can see nipples from down the block. Sometimes they're natural and sometimes extreme nipple play and pinch twisting can make them that way after a long period of time.
I'd like to give that guy's eraser nipples a Texas Titty Twister!
by Clara Fication June 5, 2016
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Perfectly cylindrical tips, roughly the size and color of their namesake.
Her pencil eraser nipples looked like the end of a No. 2 pencil.
by deftonepiper September 15, 2008
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