This is Adric and Lorna from Michael Rosen's book Lust and Romance available at Amazon. - Image by Michael Rosen
Here are all the facts, experiences, techniques and media/links we have on:

French Kiss

To kiss someone with an open mouth, using a tongue.

Interesting Tidbits

Wiki-How has an article on how to French Kiss:  http://www.wikihow.com/French-Kiss
Strange Maps on French Kissing: http://strangemaps.wordpress.com/2007/12/02/210-french-kissing-map/