The act of engaging in the hind-grind (aka bum-love) while submerged in a chlorinated tank designed for swimming. Also known in Britain as hydrobuggery.
"While it may be reasonable to hypothesize water as a substitute for lubricant, numerous peer-reviewed research articles as well as personal anecdotal evidence from my girlfriend confirms that pool-anal is more exciting in theory than in practice."
by YaBoyHunter May 27, 2015