In some parts of the world, pick-up involves a bar, some alcohol and very often some sort of negotiation between two people for services that may be shared or traded. In the ultimate crowd, pick-up involves a lot of athletic people, a big field, and a plastic disk called a frisbee.

I wonder though, if ultimate pick-up earned its name for a reason. In my experience thus far (that would be two games), it is a pretty good place to "pick-up" in the original sense of the phrase.