Green’s Dictionary of Slang

tip v.6

[? SE tip, to knock over, to tilt]

1. (US black) to cheat on one’s lover or mate; thus tipping n.

[US]Ida Cox ‘Mojo Hand Blues’ 🎵 You may tip now, sweet papa, while tipping is grand / But your tipping will be over, when mama gets her mojo hand.
[US]B. Jackson Get Your Ass in the Water (1974) 134: This old way you got a tippin’ through these alleys and backyards, / and when you get home to your money-woman, boy, I bet you can’t raise a hard.
[US]Current Sl. V:2 13: Tip, v. To sneak in or out to meet someone.
[US]E. Folb Runnin’ Down Some Lines 133: To [...] tip, and to trip up on someone all connote sexual infidelity.

2. to perform an illicit act.

[US]E. Folb Runnin’ Down Some Lines.

3. to be in a place where one should not be.

[US]E. Folb Runnin’ Down Some Lines.

In phrases

tip out (v.)

(US black) to have sex with someone other than one’s spouse or regular lover.

[US]Hughes & Bontemps Book of Negro Folklore 375: You may tip out sweet poppa, while tippin’ is grand, / But yo’ tippin’ will be over when Momma gits her Mojo hand.
tip over (v.)

see separate entry.

SE in slang uses

In phrases