First dates can be a total blast or a complete nightmare, and the gamble is all part of the fun . . . right? For the ones that end up making you tell yourself that you're never dating again, it's always a combination of things that ruined it all. Bad breath is definitely a turnoff, but even that alone isn't always enough to be a dealbreaker. There are other indications that will clue you in to how awful things are really going. If you're on a bad date, you'll probably know it right off the bat, but here are 10 warning signs that a second date is totally out of the question. Check, please!