We keep meaning to try out one of those make-your-own-dildo penis casting kits, but the intrepid Grant Stoddard of Nerve beat us to the punch: alas, there's no photographic documentation of his experiment, but thanks to him we'll still know exactly what to do the next time someone tells us where to stick it.

I Did It For Science: Strap-On (Nerve)
Previously: Make Your Own Dildo

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