Oh, every problem you have can be solved with getting more and more fat? Let's see you deal with diabetes.Lets see you in a bikini/speedo. Lets see you win the Olympics. Well, for that one I guess you can just sit on all the other contestants.
To get the "good" alternate ending on the last level, (spoiler btw) wait. Really, just wait. Then the beam will disappear. Walk through the wall and there will be spikes. Pick both up. There will be a wall. Shoot ONE spike at the upper part of the yellow brick. Climb it, and the person who narrates the game will show he was possessing you or something. Shoot him with the other spike and walk forward, almost stepping onto the spikes. Then you win. The end. Have a nice day.
A tip (even if you don't want one): buy airborne and water resistance as soon as you can. Then buy all four moisture resistances. I usually win because it spreads to the other countries through the water/docks, usually getting that ever elusive Madagascar. P.S. Every time I put in my disease name, I always put in 'TWERKING.' It makes me laugh each time to see that 'TWERKING has gotten rid of all life on earth' or whatever.
 "Don't press the red button part two."){kind=icon}
 "Luke The Button"){kind=icon}
 "Sushi Cat 2"){kind=icon}
 "Papa's Wingeria"){kind=icon}
 "Depict1"){kind=icon}
 "Pandemic 2"){kind=icon}