swim the Rhine

Variant of swim the Tiber, by substitution of Germany's river Rhine for Rome's river Tiber.

swim the Rhine (third-person singular simple present swims the Rhine, present participle swimming the Rhine, simple past swam the Rhine, past participle swum the Rhine)

1. (intransitive) To convert to Lutheranism.

• swim the Bosphorus (“convert to Bosphorus”)
• swim the Forth (“convert to Presbyterianism”)
• swim the Thames (“convert to Anglicanism”)
• swim the Tiber (“convert to Roman Catholicism”)