Green’s Dictionary of Slang

1. (US) problems, controversy, action.

1937

P. Cheyney Dames Don’t Care (1960) 118: He tells her she ain’t gotta dime because he has given the bonds to this other femme. An’ then the hey-hey starts.

2. (orig. US black) sexual intercourse.

2000

(con. 1940s–60s) Décharné Straight from the Fridge Dad 88: Hey-hey Sex.