Ok I got my hands on a measuring tape. I can tell you exactly how much my forearm is: 12 inches for both forearms...lol no way are the massive.
My biceps are 14.5 inches though...which is weird. I used to be bigger before.
Let me go over all my measurements now that you've brought this up:
Height: 5'7
Weight: 188-192 lbs........used to be @ 210-220 last January when I did all these measurements last lol...
Shoulders: 22 inches
Chest: 44 inches......this used to be 48
Arms: 14.5 inches.....used to be 15
Forearms: 12 inches
Waist: 36 inches.....used to be 40
Thighs: 25 inches
Calves: 15.5 inches....used to be 14
Strange, huh?