Related Clues:
- Unpleasant sticky stuff
- Don't mess with this king - it's messy
- Ugly expression when Bill's put off muck
- Unpleasant source of energy produces muck
- Unpleasantly sticky substance
- Piece ending in sink, sticky stuff
- Unpleasantly sticky stuff
- Filth, dirt
- Smut from regular girlie meet
- Unpleasant sticky material
- Sticky material
- Not a mirage perhaps but ingrained dirt
- Dirt, for example, returns round the edge
- Smut produces scowl, putting Bill off
- Embedded dirt