"Beauty is in the eye of the beholder" means "different people have different opinions about what or who is beautiful". Example: It’s true that beauty is in the eye of the beholder. I haven’t found any of Mary’s boyfriends attractive.
“Someone’s bark is worse than their bite” means “someone’s actions are not as bad as their threats”. Example: When I started my new job, my boss was always threatening to fire me. After a few weeks, I realized that her bark was worse than her bite.
"Zip your lip" means "be quiet". Example: Why don’t you just zip your lip? I’m tired of listening to you. - Learn and improve your English language with our FREE Classes. Call Karen Luceti 410-443-1163 or email firstname.lastname@example.org to register for classes. Eastern Shore of Maryland. Chesapeake College Adult Education Program. www.chesapeake.edu/esl.
“Be full of yourself” means “to think that you are very important in a way that annoys other people”. Example: Ever since she won the prize Mary’s been so full of herself that no one wants to talk to her.