Kill The Carp!
One of the strangest czech christmas traditions: You have to buy live carp on the street few days before Christmas. Then bring your brand-new friend to your bathtub and wait untill Chtismas Eve comes. In the afternoon on 24th December the strongest one of your family goes to the bathroom and KILLS THE CARP! Christmas Eve dinner: fried carp, potato salad and fish soup:o)
Well, actually number of people who let vendors to kill their carp is growing up every year:o(