skeg n.2
1. an unpleasant substance.
 | on Urban Dict. 🌐 skeg Repulsive substance of unknown origin; state of uncleanliness, possibly due to residual bodily fluids having dried on the skin. ‘You can’t go out like that! You’re covered in skeg!’. |
2. a smelly vagrant or one who resembles such a person.
| OnLine Dict. of Playground Sl. 🌐 skeg, skeggy n. someone who smelt like a tramp and looked filthy. |
In derivatives
unpleasant, disgusting, the implication being of rotting or faecal matter.
| on Urban Dict. 🌐 Christ mate, your bills are really skeggy. |