Green’s Dictionary of Slang

Scotch eggs n.

[rhy. sl.]

legs.

1984		Partridge DSUE (8th edn) 1021/2: since ca. 1950.
1998–2002		G.D. Smith Cockney Rhy. Sl. 🌐 Scotch Eggs: Legs.
2002		B. Kirkpatrick Wicked Cockney Rhy. Sl.