Paul McCartney -- All You Need Is Lemonade

Talk about a steal -- for $1 you could get a glass of fresh lemonade or a muffin ... AND YOU GET TO MEET PAUL MCCARTNEY!!!!!

The legendary Beatle and his wife, Nancy Shevell, were spotted in front of their home in the Hamptons this weekend, helping daughter Bea and a few friends make a little dough selling refreshments.