Green’s Dictionary of Slang

1. the act of moving and slapping the hands in time to the rhythm of music; also attrib.

1958		Johnny Otis 🎵 Willie and the Hand Jive.
1972		(con. 1950s) Jacobs & Casey Grease II i: Only ten more minutes ’til the big Hand-Jive Contest.
1978		R. De Christoforo Grease 159: We started really flippin’ out on the hand jive.

2. an act of masturbation.

1972		B. Rodgers Queens’ Vernacular 116: Hand jive, male masturbation.
1999–2001		quinnelk T. Rex’s Guide to Life 🌐 Okay, since people don’t want to actually say the m-word and the chicken and monkey phrases have been used to death on MTV, I thought it would be my duty to provide you with a bevy of other useful terminology that may be helpful in this area: [...] that crazy hand jive.