I'd not heard the English or the German, and wouldn't have guessed what they meant. Was amazed to see bio break in the English dictionaries!
Only two examples on the Guardian:
https://www.theguardian.com/sport/2010/oct/02...
"Let's be good hosts and use the American version of 'wee break' - 'bio break'," suggests Dominic O'Reilly.
https://www.theguardian.com/money/1999/apr/19...
Judi James on what the jargon you use says about you
When someone insults you, they have 'pressed my crumple button,' praise is 'positive stroking', sacking is 'negative employment manoeuvre,' problems are 'positive challenges' and when you go to the loo you pop off for a 'bio-break.'