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As a German visiting the US
(social.fossware.space)
Explanation: Germans ~~used to~~ (apparently only in my bubble) call cellphones "Handy" and many people still do that. My friends from america found that quite hilarious.
Yes. Or even composition of words. I remember during a class discussion translating "Thanksgiving" as "Danksgebung" on the fly. At least I greatly entertained my professor—and I'll never forget "Erntedankfest".
When I was doing my exchange year in sweden I had a german teach us swedish in english. It took me while until I realised that instead dictonary she kept saying wordbook.