Dont go in their it stinks i've just had a fucking good muck out.
Wheres the bog, i need a muck out.
Your fucking cat has just had a muck out all over the fucking floor.
Look at that dog its having a nasty muck out, and it fucking stinks.
'Someones had a Muckout in there, it stinks they have proper smashed the fuck out of trap 1'.
MO = Muckout, 'Dont go in there ive just been for an MO'
'What a Muckout, someone better call a plumber'