William Howard Taft weighed 335 lbs. which was a lot even for his six-foot frame. 

One day someone pointed to Taft's massive stomach and asked, "What are you going to name the baby?"

The president replied: "If it's a boy, he will be a junior.  If it's a girl I'll name her Helen.  But if, as I expect, it is only gas, I'll name it after you."