The Galwegian Sewage Pipe is the act of sounding a funnel and the getting a male/female with diarrhoea to shit in the funnel, filling your urinary tract with shit.
Man I just felt so empty inside, but she just filled me up with a hot Galwegian sewage pipe
The act of shitting into a female’s vagina(or ass) and then proceeding to insert a phallic object. This phrase utilizes the slang “pipe” which typically means “to fuck”.
Johnny: Damn, it smells like a fucking farmhouse in here. What did you two do last night.”
Roger: Yo, we hit the sewage pipe on the bed, didn’t get it all out. My bad, but it was worth it.