Roman aqueduct

[Greta]

sexual act requiring 3 or more people (one must be male); sexual act when a woman ejaculates/urinates down a mans penis which runs over the balls, down [the taint], and to the anus. The [preceding] liquid is to be drunk by the third party at the site of the anus.

Named after the Roman Aqueducts that brought water to Rome from surrounding areas using a network of [drainage] areas and gravity.