What the song says, I can do exactly that to you.

Girl, you're pretty and do not let anybody tell you otherwise because you should be there for your own self and do not do nothing bad to yourself because it's not their fault that they're more uglier than you. They're most likely either bullying you because you're ugly or because they don't want to prove to themselves that they're uglier than you because you're prettier than them. So have a great day, or night, or evening, whatever that's time for you, and slay your day all day.