A programmer walks into a bar and orders 1.00000000001000000...897175 root beers. The bartender says, "I'll have to charge you extra; that's a root beer float".

A programmer walks into a bar and orders 1.00000000001000000...897175 root beers. The bartender says, "I'll have to charge you extra; that's a root beer float". And the programmer says, "In that case, make it a double".