When Jennifer was eleven in boarding school, she and an older girl were very affectionate with each other. The made a booklet they called their kiss catalogue: there was the Butterfly (done with the eye lash) the Airplane (landing and takeoff) the Eskimo (nose to nose.) The school burned down, and the catalogue was alas, lost to history. Who knows what other varieties were listed. The Snail. The Sponge. The Spelunker.