I'm going to say 2.5. It's a rather specific number, isn't it? It makes you wonder what it could possibly refer to. Maybe it's a score, a rating of some sort. Or perhaps it's a measurement, like 2.5 inches or 2.5 liters. But as I think about it more, I realize that it could also be used to describe a character. A character who is just a little bit too much, a character who is unbearable in some way. Maybe they talk too loudly, or they're always interrupting others. Or perhaps they have a really annoying habit that just drives everyone crazy. Whatever the case may be, 2.5 seems like a lot of words to use to describe such an unbearable character.