Want to know what a kiss reveals? A new book, 'Kisstory' tells the history of kissing and reveals that not all smooches are romantic. For instance, in Naples in 1562 kissing publicly was punishable by death. The word "kiss" comes from the Germanic word kussjan, probably because of the sounds it makes.

In a lifetime the average person spends around 336 hours kissing - equivalent to a fortnight-long snog, reports the Sun. What we term a French kiss is known as an English kiss in India. As kisses weren''t shown in Indian cinema for many years, the first open-mouthed smooch they saw was in a little-known English-language film in 1926.
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Meanwhile the French describe tongue-kissing as "rouler une pelle" - "to roll a shovel" - or "rouler un patin" - "to skate". The 2005 film Brokeback Mountain drew a lot of attention for depicting a sexual relationship between men, but the first all-male kiss in a film came almost 80 years earlier, in the 1927 movie Wings.