Green’s Dictionary of Slang

1. an act of defecation [= shit n. (1)].

2002		B. Kirkpatrick Wicked Cockney Rhy. Sl.
2003		B. Dark Dirty Cockney Rhy. Sl.

2. diarrhoea [= shits, the n.].

1992

R. Puxley Cockney Rabbit.

3. breasts [= tit n.² (1)].

2003

B. Dark Dirty Cockney Rhy. Sl. 101: two-bob bits tits.

4. a contemptible person [= shit n. (2a)].

2000

Guardian Rev. 28 Apr. 12: Don’t mac me off like a two-bob.