I wouldn’t usually review teen comedies two weeks in a row, but I loved Eurotrip. Well, I loved the first two-thirds of it. It got crummy reviews in America — “Tasteless Eurotrip Doesn’t Travel Well” — and sank without trace, and I expect it’ll do the same in Britain. But it seems to me there is rare wisdom in its sense of its own limitations. The plot is really no more than a pencil outline. Scotty (Scott Mechlowicz) has finished high school in Ohio and been dumped by his girlfriend. When he mentions this to his penpal in Germany, the...