"20-year-old testicles" refers to the testicles of a person who is 20 years old. Testicles are male reproductive organs responsible for producing sperm and testosterone. They are part of the male reproductive system and play a crucial role in sexual development and fertility. Testicles typically start developing and growing during puberty and continue to function throughout a man's life.
When cool air hits your junk. The automatic body reaction is to try to keep your balls warm. Keep your swimmers from dieing. So the scrotum skin around them contracts.
The act of removing the back of your whitey tighty strap and lifting it over someone’s head so that your ballsack makes direct contact with their face. The perpetratortypically wiggles their balls so as to inflict the most butt assery.