Humor gráfico: Money is money!

(El cajero) - Son $20. 
(Yo) * Le doy $20 * 
(El cajero) - Señor, este es dinero del Monopoly. 
(Yo) - ¡El dinero es dinero!

(The cashier) - It's $ 20.
(Me) * I give $ 20 to him*
(The cashier) - Sir, this is Monopoly money.
(Me) - Money is money!