Green’s Dictionary of Slang

1. (W.I.) cheap shoes, sold initially with rope soles, then with pieces of car tyre.

1943, 1959

cited in Cassidy & LePage Dict. Jam. Eng. (1980).

2. the female breasts.

2000

M. Manning Get Your Cock Out 150: There was no mistaking those huge tits [...] they were obviously Dandy’s big fucking mashers.