To borrow 20 dollars

A young Jewish boy asks his father if he can borrow 20 dollars.
The father replies, “10 dollars? What do you need 5 dollars for?”

注：历史上犹太人被冠以“贪财吝啬鬼”的恶名。莎士比亚《威尼斯商人》中的夏洛克就是犹太人。