World Rock-ord is an episode from the Doraemon 2005 anime. This episode is called Rock Your World Record in the U.S. English version/dub.
The Japanese title is a pun on world record + rock/lock. World record is "sekai kiroku," while the title is "sekai ki-rokku".
Sue promised Noby to come to her house, and he is late so,Doraemon straps a rock-like gadget onto Noby's back allowing him to challenge various athletic world records, and Noby ends up on a mission to deliver a watermelon to Sue's mom and get to Sue's house.