A sexual practice, whereby two people acquire a container full of liquid (water, or urine for extra fetish), before commencing sexual intercourse in the doggy position. This must be conducted anally for maximum effect.

The 'giver' must hold the 'taker' over the tank of liquid and, at the appropriate moment, dunk the taker's head into the liquid. The taker will then thrash wildly until their bowels void.

Just before voiding, the giver must sense a change in the taker's sphincter pressure, ejaculate wildly, before pulling the taker from the liquid just in time to slap them around the face with their semi erect, post-coital penis (see smurfing) in order to revive them.

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