"Welcome to Unsanity. I hope you enjoy my antics and remember to hit that "Follow" Button in the corner if you love getting free pants."
Where they went[]
As a promotional, Tom stated he would give free pants to anyone who followed his channel.
This photo Explains in A dictorial way why the pants are not being given
When it started gaining popularity, Tom stated he ran out of free pants. Then he realized the gravity of the situation,
and said that he merely stated "If you want to obtain free pants", not that he would give you free pants.