Doctor Odd really liked cold pizza.
The problem was, he’d order a pizza, let it go cold, and he wouldn’t want pizza anymore.
Or, he’d want a pizza, but the toppings weren’t what he wanted anymore.
He’d have a cold pepperoni pizza, and he’d now want sausage.
So, he’d fire up his time machine, make the order the day before, and he’d come back to the right cold pizza in the fridge.
He’d also use the time machine to check out cute child stars on their eighteenth birthdays.
But he mostly used it for the cold pizza and starting wars.