A smack or grab on the booty after a sincere genuine big hug. It's a form of sexual harassment but it's reciprocated by the person that should feel harassed.

Skank nudge, the process by which you heftily nudge whomever is standing next to you if someone deserving of such a gesture passes by, i.e. a skank, spiceboy or player.
An exaggerated form of the skank nudge may be used in particularly attention grabbing situations whereby the skank nudge or skank tackle may also be used: for example on hearing a terrible chat up line.
typed symbol for skank nudge: >>

In the event of a misused skank nudge, a penalty of a skank tackle may encur without the option of defending ones self.

to Engage in a "69", and the guy accidentally bumps his nose against the girls anus.

The practice (or perhaps art) of "nudging" one's code into submission. This involves taking code that is mostly correct and twiddling some bits or adding/removing lines, without really having any specific reason to do so, until the code starts to work. Also, a terrible way to write code.

Someething black people do to instigate a fight.

After doing a Number 2, the simple act of wiping that triggers the need to sit down again and complete unfinished business.

V. Getting busy. Fornicating.