The popular idiom “over and out” from TV and movies makes no sense in actual radio communications because “over” means you want a reply and “out” means you do not expect a reply. – WTF Fun Facts
Source: https://en.wiktionary.org/wiki/over_and_out
idiom
WTF Fun Fact – Laughing In Your Beard
The French phrase rire dans sa barbe translates ‘to laugh in one’s beard’ meaning to laugh quietly about a past event. – WTF Fun Facts
Source: https://www.talkinfrench.com/weird-french-expressions-part-3/