With Trevor now in his ten-year-old body, the first thing to do, since his mother won't be home for another half-hour, is to attempt to jack off to get his dick hard. However, one minute into doing it, no luck is happening as his dick has not erected and he has not even been stimulated by the failed attempt.
He decides to return to the machine, only for it to ask him how he would want the transformation to affect his life: reality around him, memories, or both?
Choosing "reality around him" would make everyone believe that Trevor was never 14, but he would still have his old memories.
Choosing "memories" would make him believe that this was always his current age.
Choosing "both" would make him completely lose all memory of his older life, and force him to completely start over from the age of 10.
The machine also asks Trevor if he would like to change his age again. In the case that he chose to change ages again, he would prefer to be younger over his regular age.