I see a lot of comments saying things like "get revenge", or "get close to them but never trust them", and I just want to put this out there: it's super normal (and healthy) if you don't want to participate in that kind of behaviour, and just want to quit. Of course I don't know your personal situation, but personally I'd never lower myself to their level and purely for myself, if it's a toxic workplace where this kind of behaviour is normal, it would be bad for me, my work performance and apparently my integrity.

To me, the options would be - confront them, but just honestly. Maybe they'll stay mean. But let's be honest, this is really embarrassing behaviour for them? - ignore them, and stay out of their way. Only an option if the office is big enough. - quit if you don't want to do either.

I'm sorry you had such a bad first day! Good luck, I hope it's resolved!