Seb2015 - just what I was going to say - jar openers are useless on most lids on glass jars but great for opening plastic milk containers & smallest bit in middle for lids on fruit juice cartons. 
Ring pulls I find often break when you lift them away from tin so it's back to faithful tin opener 
Adult offspring harbouring resentments
Wrong side driving social media stunt


or that they could cause such sickening pain!

