1. noun, The penis as it leaves it's state of erection when the owner of the penis does not want it to. For opposites, see The Surpriser Riser.
2. proper noun, The pharmecutical (sp) company that makes medicine to reduce erections; the anti-viagra.
1. "Damn you shrinker! GET BACK UP THERE!"
2. "I can't walk. I need to take some The Shrinker Pills."