Green’s Dictionary of Slang

1. an excl. of irritation, i.e. balls! excl. (2)

1979		F. Norman Too Many Crooks Spoil the Caper 23: ‘Cobblers,’ I said. ‘Just give us my order and don’t talk bollocks.’.
1983		A. Payne ‘Get Daley!’ Minder [TV script] 39: Oh cobblers, I’ve been trying to get him all day. He leave a number?
1998		Bug (Aus.) 7 Jan. 🌐 Well, cobblers to you, me maties.

2. nonsense! rubbish! an excl. of dismissal, i.e. balls! excl. (1)

1960		A. Burgess Doctor Is Sick (1972) 106: Cobblers to them [i.e the police].
2002		Pete’s Aussie Sl. Home Page 🌐 cobbler’s awls, cobblers: balls, testicles, or Balls! = Rubbish!, Nonsence! [sic].