Hide something small and sharp by your dick. The nasty girls (National Guard) or whoever searches you will most likely be too nervous/self-conscience/green themselves to check well enough on the initial sweep. Aim for neck or eye socket before they get zip cuffs on you but try to find the right moment as it will be less than a blink for the best moment to strike to present itself.

However if the man searches you cups your balls you will know he's serious about not dieing soooo take that into consideration.