We all know Gru is the godly height of 14.5 feet tall and can move at a speed of 200 Meters per second. Based on average dick size, Gru's penis is around 14 inches long. Also, Gru's dick would weigh around 2 pounds considering the average weight of a dick is .77 lbs. If he swung his dick in a circular manner, it would have the centripetal acceleration of 72.57 meters per second. This means that gru can dickslap with the immense energy of 11,421 pounds per sq inch at a tip speed greater than 584415.58336974 MPH. In conclusion, Gru's dickslap has enough energy to smash through 6" reinforced concrete and will cause a thunderclap as his dick breaks the sound barrier. I rest my case.