males, with an average pen15 height of about 80 cm off the ground. The average pen15 weighs about 100 grams.

That's a combined mass of 380,000,000 kg of pen15s.

Now we must make an approximation. For simplicity's sake, let us assume the pen15 are all evenly lined up in a ring around the equator. The equation for moment of inertia of a ring is I = mass*radius^2. The radius of earth is about 6.371 million meters. Therefore the radius of the approximated pen15 ring is 6,371,000 + 0.80 = 6,371,000.8 meters.

I = 380,000,000*6,371,000.8^2 = 1.5424*10^22

The Earth has a moment of inertia, I = 8.04×10^37 kg*m^2. The Earth rotates at a moderate angular velocity of 7.2921159 ×10^−5 radians/second.

Using Conservation of Angular Momentum we can find the new rotation of the earth.

L=I*omega= 8.04×10^37 kg*m^2 * 7.2921159 × 10^−5 = 5.86286*10^33.

5.86286*10^33 = (8.04×10^37 + 1.5424*10^22) *omega

-> solve for omega = 7.292115899502489e-05

This is 4.97511e-15 rad/s slower than earth's original rotation. This translates to 6.752*10^-10 seconds = 0.6752 nanoseconds longer per day.

If we all have a boner at the same time, we will collectively be able to last 0.6752 nanoseconds longer in bed. Stay hard fellas.

+rep cool guy very friendly gives free STDs