When one sees a familiar face,one who isn't very attractive, and feels slightly interested due to lack of company and more appealing others. Acting on these impulses isn't recommended, since you will likely regret your actions later.
Tom: Dude, I saw Beth in the same hotel I was staying at last night!
Keith: So what? You do anything?
Tom: Yeah, I asked her out, and she's not even that hot. Talk about Situation Desperation.