my point is i dont know. its fucken small hows that. 
C'mon, you can't expect me to believe any bodybuilder who posts photos of himself and then compliments himself doesn't know how to measure his waist, can you? Here is how you do it; take a cloth tape, like the kind you buy at a sewing store, wrap it around you waist at the smallest point, holding it in the front where you can read the measurement. Write it down. The good news is that it should be a lot smaller than the waist of your jeans.
Don't disappoint me, you seem reasonably smart. I trust you can figure this out. Once you do, you will soon be able to accurately measure other body parts too. This is how many bodybuilders confirm their gains.