ftdale asked this question on the artcone forums: “Definition: Kiss — the act of caressing with the lips. An expression of love, it is usually regarded as an expression so great that it could place the recipient into a state of complete heavenliness and bliss. Find your favorite pair of lips and try these on for size.” – NJ.com

Has a list of types of kissing including All Over Kiss, Angel Kiss, French kiss, Surprise Kiss, Wake-up Kiss, Massaging Kisses, Sweety kiss, Tempting Kiss, Mimic Kiss and Whispering Kiss. Uh…If you have any more scientific versions, please post in the comments.