Green’s Dictionary of Slang

1. (US, also yukyuk) to laugh.

1960		I. Freeman Out of the Burning (1961) 147: I didn’t see anything to yukyuk about.
1963		C. Cooper Jr ‘Yet Princes Follow’ in Black! (1996) 183: ‘You mean old Horrible Hannah?’ the man of God yuk-yukked.
1969		‘Iceberg Slim’ Pimp 137: I couldn’t figure why those crazy jokers at the bar were yukking like pickaninnys.
2001		(con. 1964–8) J. Ellroy Cold Six Thousand 26: Moore winked. Moore yukked haw-haw.
2010		J. Ellroy Hilliker Curse 5: I wanted a pair of X-ray eyeglasses [...] He yukked and said, Okay.
2021		J. Ellroy Widespread Panic 5: My pals yukked.
2024		J. Meades Empty Wigs (t/s) 397: The freedom to be a baby yucking with the contents of its nappy.

2. (US gay, also yuke) to be excited.

1972		B. Rodgers Queens’ Vernacular 218: yuke (yuk, mid ’60s, fr sl juke = bawdy raucousness // Gullah) to be excited.
1978		L.K. Truscott IV Dress Gray (1979) 250: Slaight could not keep himself from laughing as his squad yukked it up and down.