What's a phrase you misinterpreted the meaning of for the longest time?

https://discuss.tchncs.de/post/29155606

What's a phrase you misinterpreted the meaning of for the longest time? - tchncs

I’ve seen people using “that’s what she said” in a very serious setting, as a way to say “good point/touché”. They had no idea it was from the Office.

I learnt the German word “geil” from context to mean something like “awesome” or " really good".

At some point I went to some mega fancy restaurant, like dressed up fancy and everything. The waiter asks how the entrees were, and I respond “geil”. My wife burst out laughing and later explains to me that while “geil” is used to mean “awesome”, it’s very much slang and actually means “horny”.

I bet the waiter told the cook and it made both their days, though.