he, she, etc. won't eat you

(one) won't eat (someone)

Someone has no reason to be afraid of one; someone should not be shy about approaching or talking to one. Don't worry, child, I won't eat you. I just wanted to give you a message to pass along to your father. This is your Uncle Jack, son. Well, go on and shake his hand, he won't eat you. Well, come on in, I won't eat you! Actually, I have very good news for you—you got the promotion!

he, she, etc. won’t ˈeat you

(informal) said to encourage somebody to speak to or approach somebody who seems frightening: Come on, Emma, Santa Claus won’t eat you! If you go closer, he’ll give you a present!