laying down in the tub, it occurs to me that my penis floats. must be air in the urethra, so if i pee will my penis no longer float. do i dare pee in the tub? 
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andrealaz:
this is the kind of thinking you have while on tube? sick!
theweed:
self discovery is a passion of mine. self perfection is defined by the self's definition of perfection. one day my poop will achieve neutral buoyancy, hence it will neither sink nor ascend to the surface of the water, then i will take a picture. dare i post it on SG? 