I just had to explain “I rest my case” to someone from Germany.
I hate speaking to the overseas call centers for that very reason. Some of them speak very good English (better than some Americans I have come across), but they lack the little things.
In fairness, when I get overseas calls -
Watashi no shita ga nejireru
Meine zunge wird verdreht
מיין צונג ווערט טוויסטיד
meyn tsung vert tvistid
my tongue gets twisted.