1. When the "lips" of the vagina and the "lips" of the penis meet, resembling kissing.
2. usually by rubbing or slight/partial penetration as a tease, often during or as a way of foreplay
(not full penetration).
3. Also to stimulate the clitoris before sex to give her a hard taco
Example.
1. Before he penetrated sussy, joe kiszed her to give her a preview of what's to come.
An expression used (typically through text) as a way to find out if the person you are talking to is okay with what you just said. If they are okay with it, then the conversation can continue to build. If not, then you can confirm it was only a joke.
John: You, me, and your girlfriend should have a three way.
John: ...just kidding?
Ben: That would be really weird.
John: *hesitation* Yeah I know.