You do this just about as close to my methods as anyone on this site... except mayby one of my bf's or two
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When you wanna piss, release the pressure on the bottle. Also, same contraption but add an additional hole and hook up an aquarium pump to a hose and stick it in the second hole just an inch in. Use a small aquarium air valve to control the flow of air to pressurize the bottle, sending the liquid in or out
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Just the way I like it -- hot af dude. Send that cath in about half an inch and tie around it so you can feel the sensation inside your urethra too. Put that bottle in the freezed or refer for awhile. Poke a small hole in the cap, insert the hose all the way to the bottom, lay it on the floor or under your foot and lean on it. It'll free up your hands for other things and it a terrific sensation.
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