The amount of time it takes on a blind date or a computer date site date before you realize that the next hour or two is going to be a total waste of time. In other words: you're not attracted.
Dude #1: How was the date last night?
Dude #2: Horrible!
Dude #1: What? She fail the ten second test?
Dude #2: No, I think I did! She hardly talked to me or looked at me the whole time.