A mutual urethral sounding maneuver wherein participants insert rigid alignment pins until contact is made internally, followed by foreskin docking to create an inescapable “trap.” Named for the mechanical grip and the inventor’s questionable life choices. A machinist straightness pin or runout pin being a tool.
Bro warned me about the sounded Chinese docking trap, but curiosity got the better of us. 10/10 would not recommend without a safeword and a trauma kit.
by Jimothy8008135 January 20, 2026
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