Just nipped to my car and overheard two men walking past who were debating whether Fish breathe underwater or not...!!! 
One was adamant that they jump out of the water, take a gulp of air then jump back in!!! 🤣
It reminds me of a page in a magazine I used to always read years ago entitled 'Men Overheard!'
Can't remember the name of the magazine and I'm sure they wouldn't get away with it in this 'you can't talk about one gender over the other' society we live in these days even though it was just a bit of fun! Always made me laugh, anyway!
What funny anecdotes have you overheard men discussing?!
(LIGHTHEARTED!!!)