your waist got bigger from working out? if so, you may be doing it wrong OR you're on hgh, bro.
I guess he'll have to sell the jeans once he starts cutting again...
Where I wear my jeans, I assume, is where most people do, hip slung. And the fact is, there is a muscle that runs down your buttocks which influences your measurement there. When you come from where I was, which was underweight, skinnyfat, and weak for an adult, an increase in thigh, glute, and waist size is to be expected.