Failure to shower.
Being self-centered. On a first date, you're supposed to talk about yourself-how else do you get to know someone? But there should be give-and-take; genuine interest in listening. Oh-and completely-totally-100%- ignore your cell phone.
Bad breath! YUCK!! BLEEECKK.
Taking his or her mum with them
she starts talking about her cat
cheesiness has to be my biggest date turn-off, closely followed by having to generate the whole conversation myself
spending too much time on a cell phone... my advice... keep it turned off on first date, there is nothing more important then showing your partner that you are there in the moment.
When her ex-comes and they end up all over each other.
Talking everything about herself. Self-indulgent.
I must talk too much, I hardly get a 2nd date so I would think talking too much is a first date turn off, I don't know why I talk to much, maybe its because I am lonely and have years of talking to do so I would say talking to much so next time I am going to try and sit on my hands and just be quiet and just nod my head and say 'is that so, do please tell me more'
being really BORING!!!
Having your Dad waiting in the car.
Stinking nicotine moustache.
Too much perfume.
talking about money with figures. telling me your ocean-front home's rent is paid for the next year. super cool.
BAD PERSONAL HYGIENE
If the BA is the biggest turn off then I am totally screwed :P
I would say bad manners would be the biggest turn off.