As you slip back to the computer, you start adding more bits of info into the machine...your aged eyes already have been weakened so you don't really see that you increased your body hair density and added 20 years to your age, not the 2 you thought.
As you pressed enter, the changes begun...you see your body hair thicken but start to turn gray. You run into the bathroom to see your body get to an age of about 60, with graying hair and a severely balding head.
"What's next?" you say in your deeper voice.