A word of advice, after using Deep Heat for a bad back wash hands thoroughly before scratching testicles.
Bet he'll think twice now before signing "I got a brand new combine harvester an I'll give you the key"
So a true story. A mate of mine went on a long bike ride on a hot sunny day with no shirt. He got really bad sunburn. Blisters and that. When he got home his Missus looked through the medicine cupboard and found the very thing... Yep, Deep ****ing Heat He had to go HRI for treatment. They're not together anymore