A builder friend sadly deceased had a job up in London at a hotel, drain blocked. He had a bloke working for him who was an off on heroin addict & schiztoid nutcase, he only had him working for him as you could give him the filthiest jobs & he would just get stuck in. Down a manhole he put his arm up the drain & said "I can feel it its a plate jammed in there, I think i can just get my fingers in one side". Anyway he pulled & the plate dislodged whereupon the backed up toilets & drains from 4 floors up gushed forth, Everyone scattered & he was blown out of the hole on a fountain of old john brown. I later worked with the bloke at the boatyard & it was an education. He later died in his armchair of an overdose in april & wasnt found until july.