I'm a 16 year old boy. 5'8 and around 130-135 pounds.
My pants are 30x32 and some days they will be super snug on my waist and other days super loose.
I don't think it's just that the pants are shrinking or stretching out because I'll look noticably slimmer or thicker unless my mind is playing tricks on me which isn't impossible.
So yeah. What's the deal?