The saying means what is considered good is in fact bad and what is considered bad is actually good.
an example could be you trust someone and they seem to be a good person but looks are deceiving and they turn out to be bad
What influcences to be out going and by your own means
Ok ok I can go skate with me and you get me a little something to do you want me some time I love
keep it like a warm coat because it contains like, or as, making a simile, because it says, Keep it *Like* a warm coat.