you can dish it out, but you sure cant take it

You can dish it out, but you sure cant take it is a phrase used for someone who has no problem being judgmental and insulting to other people, but someone turns around and does the same thing to them, they dont take it well at all. This is true of many people that are constantly insulting others or speaking negatively about them, who are not able to take it such as someone talking negatively about them.