Anything which can happen between a couple. There is no set definition as to what it may be, but it can be said that it is something that someone who is not part of the couple would not want to be around when it is occurring.

When you eat dirt for the first time and leave your family to build a shack in the woods

verb. could mean anything that happens between a couple like holding hands, kissing, sex, etc.

Discreet or surreptitious romantic or sexual activity. See hankey pankey for origins.

1. dishonesty, decietfulness

2. sexual intercouse, especially sexual misconduct

Doing the dirty deed with someone. Hanky panky is a pleasant and less grotesque way of saying boning your lovah.

The act of fucking ,or doinf sexual activities you dont even have to be a couple :you horny ass motherfuckers