Before he showed his fancy footwork with his partner on \"Dancing With The Stars\", the undefeated pound-for-pound king \"Pretty Boy\" Floyd Mayweather Jr. was seen \"dancing\" with the jump rope on YouTube. Check out the original video from the original author of Floyd Mayweather Jr.\'s Jump Rope Routine. The song is I\'m Serious by T.I. featuring The Neptunes. BOXING, DANCE, FLOYD, JR., JUMP, MAYWEATHER, ROPE, ROUTINE