English: Demonstration of a 27-year-old healthy Caucasian male performing a testicular self-exam. The subject's genitals are in a non-aroused flaccid state. In the exam, the subject first balances both testicles to compare their weights. He then gently rolls each individual testicle between thumb and fingers to locate any soreness, lumps, hardness, swelling, or other abnormalities. He then checks the epididymis attached to each testicle for swelling, soreness, or other abnormalities. This process should be performed at least once a month on all pubescent and post-pubescent males, ideally during or after a warm shower when the scrotum is loose and the testicles are low. PLEASE NOTE: I am not a licensed medical professional, and this photo and description should only be considered an amateur example of this procedure. The Wikipedia page for TSEs contains links to professional descriptions and demonstrations.