With the kissing law, you probably don’t use your lips enough these days, except maybe after you’ve just had a scrumpious bite of chocolate cake. You would then use them to produce a poppysmic sound…
‘Poppysmic’ derives from the Latin poppysma. Romans used the word to describe a kind of lip-smacking, clucking noise that signifies satisfaction and approval. Hence the reference to chocolate cake…
Source: World Wide Words
