Green’s Dictionary of Slang

sour adj.

(US black) untrustworthy.

[US]‘Dutch’ ? (Pronounced Que) [ebook] The muhfucka sour, straight up. He fucked wit’ some cat named Chill and another nigguh named Mark. Both of ’em got busted and doin’ dinosaur numbers.

SE in slang uses

In compounds

sour-apple quickstep (n.)

diarrhoea.

[UK]Roger’s Profanisaurus in Viz 87 Dec. n.p.: sour apple quickstep euph. Suffering from diarrhoea. As in: ‘Your wife is taking rather a long time in the powder room.’ ‘Yes, I’m afraid she’s dancing the sour apple quickstep this evening.’ See also Tijuana cha-cha.
sourball/-balled

see separate entries.

sour belly (n.)

1. (Aus.) in attrib. use, puritanical.

[Aus]Sydney Sportsman (Surry Hills, NSW) 16 Mar. 6/5: [T]he sour-belly push who persecute perspiring, paternal Ministers of the Crown with a dog-in-the-manger spirit of jealous hate.

2. see sow-belly n.

sour dough (n.)

1. (orig. Can.) an experienced prospector in Alaska, the Yukon or the Northwest Territories [the use of sourdough (fermenting dough, esp. that left over from a previous baking, used as leaven) in the making of bread in mining camps. Allegedly, the need to keep this warm meant that, on cold nights, the miners would sleep with a lump].

[US]Klondike Nugget (Dawson, Yukon Terr.) 20 July 1/4: The usual strong expletives had been used expressive of their meeting and Mr. Chee Chaco was not looking for information from his old friend Mr. Sour Dough .
[US]E. Robins Magnetic North 154: You don’t get an old Sour-dough like Dillon to travel at forty degrees.
[US]J. London Smoke Bellew (1926) 118: Now, if they was real sour-doughs it’d be different. If there’s one thing a sour-dough can do it’s sure walk.
[UK]L. Thomas Woodfill of the Regulars 70: We also fell in with some of the old-time sourdoughs, who told us tales of the big gold rush.
[UK]B. Lubbock Bully Hayes 14: A pair of old sour-doughs like myself an’ John A.
[US]S.J. Simonsen Among the Sourdoughs 10: Something about his demeanor indicated that he was not a sourdough.
[Can]R. Service ‘My Husky Team’ in Lyrics of a Low Brow 26: ‘You know that Sourdoughs jest cain’t lie / So here’s the dope,’ he said.
[US](con. late 1931) E. Lucia Klondike Kate 242: The Alaskan-Yukon sourdoughs paid Kate the greatest tribute of her life.

2. see sour n.

sourpuss (n.)

see separate entry.