The man said he stopped at the Giant store in Prince Frederick and bought some scratch-off lottery tickets to keep himself occupied while waiting for his order at a nearby sandwich shop.
The man said one of his four $5 scratch-offs earned him a $10 prize, and one of his two $10 Blizzard Bucks tickets ended up winning him a $100,000 top prize.
"I saw another zero and another zero, another zero and another zero," the player recalled of silently revealing the prize amount at the sub shop. "I wanted to keep it quiet."
The man said he went outside to scan the ticket on his phone.
"I checked it two or three or four times," the player said.
The winner said one of his grandchildren was skeptical of his news and came over later in the day to confirm the prize.
The man said his winnings will go into his retirement fund.