Sonic cherry limeade. I don't even care about soda mostly, I'll take a Mexican Coke (because real sugar, not HFCS) if it's around and enjoy it but soda is never something I find myself actively wanting, and I rarely order it. But SONIC. I don't even know what they put in there, it's not like they're using fresh from-scratch cherry syrup or something, it's just fast food! BUT SO GOOD.