def add_topping(key):
	"""Will add a topping to your pizza"""
	number = is_number(key, storage.toppings)
	if number or number == 0:
		storage.your_toppings.append(storage.toppings[number])
		spk("You added %s to your pizza. Your pizza currently has %s on top" % (storage.toppings[number], storage.your_toppings))