Toilets always clog up when you need it least. If you don't have a pawn in the house, you can use a plastic bottle.
Once the plastic bottle has been emptied, it is ideal as a substitute for Pömpel. Vinegar and baking soda need to soak about overnight. After that, the water in the toilet should drain freely again. But even with a clogged siphon, a PET bottle can work wonders. It is best to get the excess toilet paper out of the toilet bowl beforehand with the help of household gloves and throw it in the trash can.