Paying For Groceries
This guy did a "prank" where he just paid for people's groceries. AWESOME!
So, the way that he did the prank was to kind of watch people around the store that seemed like they needed their groceries paid for. He'd get behind them in line and had already given the store the money to cover them.
Then, the clerk would inform them them that they were the "Free Groceries For The Day" winner.
ALL of them were super happy and thankful. One woman even said that it made her year. Awesome.