How can I approach this?

The only way to shut someone up is to say something true. If he says, "You're dumb, bitch! " You should be like, "Shut your ugly, gross ass up! You look like a damn cockroach, I should spray you with raid. " or "You chipped, snagga tooth bitch" ahahahahaha everyone will laugh and they'll shut their dumb asses up. If they keep talking after that, just stay seated and don't do anything, they'll realize that the joke is on them and that they've lost.

Okay, if telling them to stop isn't working, or ignoring them isn't either, you can always try turning the tables. I'm not saying that you start doing the same as they are, but you can try and take a higher road. What I mean by that is that you perhaps, when they start in on you, you talk loudly enough so that everyone can hear and you publicly embarrass them. You can say things like, "You'd think that you'd be clever enough to come up with some new material. Guess this proves everyone wrong. " or you can try, "These guys keep saying all these big words. I wonder if they even know what they mean? "

Basically you need to show them that whatever they can do, it'll never affect you because you're too smart for their simple stupidity. You also need to believe that. Whatever they say, they don't and can't know you as well as what you do yourself. You know your own limits and lack of them. Guys like that don't know them because they don't truly know you. Don't let them dictate to you what you should feel for yourself. Your life has a meaning and a purpose, and a few ignoramus idiots can't change that. Don't let them get you down. They can't change a single thing about you apart from what you feel about yourself. Don't give them that power. It belongs to nobody but yourself.

I hope that this tactic works for you, and that you're able to take back what power is yours to hold. Don't give up and fight on!

They like you. It's just that simple. But they're young, dumb and full of. Well, you know the rest. Single one of them out, one with an obvious flaw, (Please forgive me for this short guys -- I love you, my guy is short) single out a short guy and the next time he says something nasty, tell him, "I dare you to stand on your child seat and say that to my face. " Something like that. Think of good, FUNNY quips, not nasty ones, try funny. Otherwise, take a different route home and go out of your way to avoid them. Peace of mind is worth going out of your way a bit, I believe. Good luck!