Grandma and Grandpa were visiting their son and stayed overnight. While there, Grandpa found a bottle of pills in the medicine cabinet labeled “V” and asked his son if he could try one. His son warned him, saying, “Dad, they’re really strong and expensive.”

Curious, Grandpa asked how much they cost. His son replied, “$10 per pill.” Unfazed, Grandpa said he didn’t mind and would leave the money under the pillow before they left the next morning.

The following day, the son found $110 under the pillow and called Grandpa, confused. “Dad, I told you the pills are $10 each, not $110!”

Grandpa chuckled and responded, “I know—the extra $100 is from Grandma!”