1. When you are masturbating and your parents walk in giving you a "Boner-Shrinker".
2. Waking up in the middle of a
sexy dream with a hard-on next to your FAT UGLY companion lover giving you a "Boner-Shrinker".
3. When you are at the beach with a bunch of hot chicks and you have a boner. Then you get in the ice
cold water.
4.
Hilary Clinton would also be considered a "Boner-Shrinker"