Any device or apparatus used to penetrate a bodily orifice for purposes of probing in a sexually gratifying manner.
I was bent over in the kitchen and the next thing I know my husband gave me a rectal peneprobe with a soup spoon.

I discovered a whole new world when I have myself a peneprobe with my electric toothbrush.
by Eaton Holgoode January 29, 2018
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