Aah, I love it when Dom talks about Hawaiian things! The poi was hilarious! So gross! (It's like eating pureed raw potatoes-- that slimy, starchy texture is just... ewww). I love the way he played it up, trying to get more and licking his fingers. LOL!
Dom talking science always makes me happy, too. :) I'm VERY impressed that Dom is reading A Brief History of Time! Gah-- I never made it more than 1/4 of the way through that book. Physics is the one branch of science I just can't get my mind around. =/
About that Amazonian fish-- definitely one of the freakiest parasites ever. Yes, it can swim up a stream of urine and lodge itself into the urethra. *shudder* Normally it is parasitic on larger fish, and lodges itself in a fish's gills, which it finds by swimming towards urea-like compounds the gills emit. But it can also be attracted by the same compounds in urine. O.O It's very easy to avoid, though-- just don't pee into rivers & streams in tropical S. America. Lol! (I don't think having sex in the water could attract that fish, but the very thought of it is so leg-crossing that I could see it as a very effective deterrent to such activities).
Honestly, though, there are soooo many nasty parasites/diseases you can get in freshwater in the central & south American tropics that I have a policy to never to swim there. Luckily you don't have to worry about those things in the ocean, or in Hawaii!
I do wish Dom had made that point more accurately: sex in the ocean = somewhat difficult, but not dangerous parasite-wise!
Dom should just be careful where he pees
, and his bits will be safe. ;)