Mine: to stop hiccups, have a teaspoon of vinegar. Everyone has always been surprised how effective it is! so much so, I was in a pub once and couldn’t stop hiccuping, so I had a sachet of vinegar and everyone stared in amazement at 1) how gross it was (I love vinegar so didn’t care) and 2) that it instantly stopped hiccups!
Hopefully this tip helps someone else!
What’s yours?