You never know, it may spread everywhere! BTW I strongly advise that if you do contribute one you google it first. Great minds think alike and it’s astonishing how many seemingly original thoughts have already been thunk, so to speak!
Here’s my contribution. It didn’t turn up on a cursory google but do let me know if I missed it and it’s already out there.
On being asked if he would marry again aldiboronti said long ago, Marriage is a mistake a wise man makes only once and a very wise man not at all.
The corollary (coronary?) [courtesy National Lampoon]: A wise man marries his second wife first.
I first heard this on I’m Sorry I Haven’t a Clue c. 20 years ago. Can’t remember who it was - probably Graeme Garden. Even then it may not have been original. It is a good one though, I hope pointing this out doesn’t leave you feeling too… deflated :).