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What does “Zwanni” mean in German money slang?

German flea-market and street talk has its own short money words. Zwanni is the casual German for a 20-euro note, like English “a twenty.” It belongs to a small family of money slang: Fünfi (€5), Zehni (€10), Hunni (€100), and Tausi (€1,000). Germans drop these into haggling, friend-group splits, and casual price talk; you wouldn’t see them in a contract.

In this clip, a man is buying used Game Boy cartridges at a flea market. The seller offers two for Zwanni (“twenty”), the buyer counters at zweiundzwanzig (“twenty-two”), and they shake on it. The whole back-and-forth is everyday German flea-market grammar, with Zwanni as the shorthand that signals “we’re being casual here.”