My wife has gotten a little too heavy... especially in the bottom area...?

Too many donuts and no exercise made her put on at least 30 pounds since we married and it all goes in the ! I dont know how to make her ashamed of not staying in touch... So I ordered this new toiled "Big John"... Its twice as big as a regular toilet and has 3 times as big seating area. It looks scarily humongous... My wife is on vacation now and I am planning to install it by the time she comes back. Do you think she will get the hint or am I wasting my money?