What is the myth about why men put their hand in their pocket when there around a woman they like?

Don't people think its more of a habit instead of a sign? Well, if it is a sign, I guess most men put their hands in their pockets when they are around a woman they like so that they could come off as a much more cool guy. Don't you think so? Putting their hands make them look better and serene. So, for them, by doing that, perhaps the woman that they like might notice them and gain interest in them.

Ok sorry to whoever gave the previous answer but it is incorrect.

Men shouldn't put their hands in their pocket because it is a sign of disrespect. its not only around ladies. it is thought that if men put their hands in their pockets they are playing with themselves and that is why men shouldn't put their hands in their pockets.