Green’s Dictionary of Slang

porky adj.

1. fat, even obese.

Night Watch II 105: A porky man, with a leger under his arm.
Mrs J.H. Riddell in Once a Week 28 Apr. 452/2: As she had been a forward, fat, light- haired, snub-nosed, porky kind of a child, so she had grown up into a forward, ill-made, light-haired, snub-nosed, meaningless ex- pressioned girl.
[UK]R.S. Surtees Sponge’s Sporting Tour (rev. edn) 275: Mr. Sponge was a good deal more put out by the incident [...] than his porky host.
[US]R.L. Bellem ‘Dead Don’t Dream’ in Hollywood Detective July [Internet] I didn’t mention that I’d just been in conference with his porky partner.
[US]E. Thompson Garden of Sand (1981) 141: She was [...] giggling and thumping the jerk on his porky back.
[US]Time 6 Nov. 88: He is making love to his wife (a porky and bubbleheaded blonde).
[US]‘Victoria Parker’ Pay for Play Cheerleaders [Internet] She reached down and pulled both hands along the sides of the stalk, moving them up and down, then curling her red-nailed fingers around his porky prick.
[US]J. Wambaugh Finnegan’s Week 260: That porky dude’ll rat off the little Mexican.
[UK]H. Mantel Beyond Black 279: He looks porky, all right.

2. (US) second-rate, inferior.

[US]E.H. Babbitt ‘College Words and Phrases’ in DN II:i 51: porky, adj. Very poor, bad.
[US]T.A. Dorgan in Zwilling TAD Lex. (1993) 65: (Some Pests You Will Meet In Your Travels) And the fellow who insists on telling you these ‘porky’ dialect stories.

3. (US) dissatisfied.

[US]M. Levin Reporter 373: Dinky was getting eight bucks a gallon and giving Blackjack only three [...] So he began to get porky.