I know you will enjoy this cock sucking challenge.
You will need a dildo and a timer for this assignment/training. I am focusing on your cock sucking ability and endurance today. You are my little cocksucker that needs to learn exactly the right way to suck a big, fat dick.
Practice makes perfect, right? I want to see that head of yours bobbing up and down while you suck cock with enthusiasm and endurance. Fill your cock hole with a big cock and go to town. Strengthen those jaw muscles. You wouldn't want to cramp up, now would you?