One afternoon, Grandpa and Grandma were sitting on the porch celebrating their 60th wedding anniversary.
Their grandson asked, “Grandpa, what’s the secret to staying happily married for 60 years?”
Grandpa smiled and said, “Simple. On our wedding day, your grandma and I made a deal. Whenever we had an argument, the one who was wrong would apologize… and the one who was right would go for a walk.”
The grandson looked impressed.
“Wow! That’s really wise. So how many walks did Grandma take?”
Grandpa burst out laughing.
“Walks? Your grandma never took a single one!”
“Never?” the grandson asked.
“Nope,” Grandpa replied. “For 60 years, I’ve enjoyed daily exercise!”
“I may not have won many arguments, but I’m probably the healthiest 85-year-old in town!” 
