The kind of slap a pimp gives to his whores to keep them in line or punish them. However, it is most commonly used to describe an insulting slap from one man to another, as if the slapper is treating the slappee as his bitch.
You just gonna let him bitch-slap you like that?
A compound word from "instant" and "ban"; to be banned instantly, as from an online game or web forum.
A behavior for which there is zero tolerance, which will likely result in an instant ban.
As verb: You'll get an instaban for that if you're not careful.
As adjective: Posting child porn is an instaban.