http://christwire.org/2010/05/how-to-spot-a-masturbator/
"To help turn the tide on this crisis, its important for parents and work supervisors to be able to spot a chronic or even just a casual masturbator in their midst. Maternal wisdom has long stated that oversleeping, locked doors, avoiding eye contact, messy beds, fear of clean underwear, long steamy showers and a pungent bleach-like odor on ones bedsheets are all red flags of masturbation invasion. One trick passed on to me is that you can press your nose to a young mans mattress, inhale deeply and (irregardless of the smell) announce, That smells like semen. If the boys face turns red and he runs from the room, the evidence is clear."
"To help turn the tide on this crisis, its important for parents and work supervisors to be able to spot a chronic or even just a casual masturbator in their midst. Maternal wisdom has long stated that oversleeping, locked doors, avoiding eye contact, messy beds, fear of clean underwear, long steamy showers and a pungent bleach-like odor on ones bedsheets are all red flags of masturbation invasion. One trick passed on to me is that you can press your nose to a young mans mattress, inhale deeply and (irregardless of the smell) announce, That smells like semen. If the boys face turns red and he runs from the room, the evidence is clear."