The slush pit is the slimy cottage cheese like substance sometimes found in a womens vagina, a slush pit exceeds the normal amount and can smell like three week old after birth mixed with burnt piss and cider.
A slush pit can harbour many other diseases such as mouth aids, regular aids, genital warts etc......
Man: " not to good mate, got her round to mine took off her clothes and pants to find a slush pit, the smell made me gag!"
Friend: " so did you not get any action then?"
Man: " No i still fucked her, it was just messy and my tongue is hairy and my mouth wont stop watering also iv got a load of large lumps all over my penis"
Friend: " sounds like youve caught mouth aids and warts mate"
Man: " Fuck!!"