The Rokeach in Hilchos Niddah (see here) discusses the results of certain events or actions by the parents prior to conception, affecting the build or personality of the child. One case he brings is:
"ואם מהפך יד ליד ומהפך לשונו דע כששימש אביו עם אמו נשק לאמו ויצא לשונו מפיו"
What's p'shat in the Rokeach? What does he mean exactly? What type of kissing is he referring to?
(I was by one of the Gedolei HaPoskim today in Eretz Yisrael and he had on this table a letter someone sent with 8 shailos, this was one of the shailos! The rest were more practical shailos in Halacha.)