A Jewish father has two kids who want to sell lemonade
A Jewish father has two kids who want to sell lemonade on the street corner for 15 cents a glass. He figures he'll spend about 3 bucks on the ingredients, the kids will sell maybe 10 glasses and then drink the rest and get stomach aches. His eventual response:
"Go stand on the corner for two hours and come back, I'll give you two dollars. Everybody wins."