First mention of kiss in writing
The Four Vedic Sanskrit texts (1500 B.C.) contain the the first mention of a kiss in writing.
Types of Kiss
The Romans created three categories of kissing:
(1) Osculum, a kiss on the cheek.
(2) Basium, a kiss on the lips.
(3) Savolium, a deep kiss.
More Kiss Facts
30 types of kisses
The Kama (desire) Sutra (type of verse) lists over 30 types of kisses, such as "fighting of the tongue".
Muscle used in kissing
The most important muscle in kissing is the orbicularis oris, also known as the kissing muscle, which allows the lips to "pucker".
French kissing involves all 34 muscles in the face. A pucker kiss involves only two.