Ever had a boner in the bakery section at your grocery store? WELL YOU'RE NOT ALONE! Experimenters at Chicago's Smell and Taste Treatment and Research Foundation discovered the smell of doughnuts increases the blood flow to the penis by 13%.
Although penile fracture usually occurs during vigorous intercourse, it's also related to aggressive masturbation and rolling over or falling on an erection. You can avoid fracturing a boner by not bending it too far at the base.