When your balls are semi-sweaty, so that your scrotum sticks to the inside of your leg. Usually you can tell a man with scrotum stick by the way he's walking (trying to unstick his sack from his leg by walking in a very open legged motion -- similar to stradle strut for women but for very different reasons) or pulling at his sack so as to relieve the stickiness.

the thing that you don’t have when you’re phones percentage is over 20