butmud Share definition Flag butmud ~but-mud, shit or Poos from the anus, also used to described a hooker when pealing ass cheeks apart to see filthy ass with poos 1.Omg that hocker had mad butmud i did her any way. 2.Sam banged a hocker with butmud last night. butmud by aaron May 11, 2006 0 0 Get merch Get the butmud mug. Buy Now — $32.95 See more merch