Honestly I used to think of Wrestling moves or Football plays.
The hands-down best way to drop it though, is to take a piss. While you may be doing the superman lean with your hand over the toilet to be able to aim it down far enough, your mind will drop the erection asap. It's borderline physically impossible to retain the erection during/after urination. They are separate body functions which the mind is programmed to shut one off while another is going on. So take a piss, as long as you stick to the two-shakes or jerking it rule you're golden
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