Blocking Masturbation During Self-bondage Sessions

For me, it’s incredibly simple to cum while tied up. Even when I’m in a tight hogtie and can’t touch my genitals at all, just wriggling on the floor for a bit is usually enough to bring an orgasm, especially for guys like us. I’ve experimented with wearing an athletic cup during self-bondage to stop me from doing it manually, but that hasn’t really done the trick.

Has anyone managed to fully block masturbation while in bondage or self-bondage? Please note I’m specifically looking at denying it during the session when my hands, arms, and legs are essentially useless. It’s not about needing a specific lock or mechanism; I just need a way to stop myself from masturbating when I can’t use my limbs properly.