Don't Step On The Tubby Custard is a segment in Teletubbies. It occurred in the episode, Ice Skating.
One day in Teletubbyland, the Teletubbies were sleeping in their beds until it's time for Tubby Custard. They woke up and cheerfully say, "Tubby Custard, Tubby Custard!" They went over with their bibs on and headed over to the Tubby Custard Machine. Po went first and made her Tubby Custard. While holding her Tubby Custard bowl, Po cheerfully jumps up and down a little when she accidently spilled some of her Tubby Custard on the floor. The narrator said, "Be careful, Po, you're spilling your Tubby Custard." After Po noticed, she said "Oh dear." After she sat at the Tubby Table with her Tubby Custard, Laa-Laa went next and made her Tubby Custard, but she got to the spilled Tubby Custard on the floor, the narrator warned her, "Be careful, Laa-Laa, don't step on the Tubby Custard." She listened and went over to the Tubby Table with her Tubby Custard along with Po. Dipsy went next and made his Tubby Custard, but when he got to the spilled Tubby Custard on the floor, the narrator warned him, "Be careful, Dipsy, don't step on the Tubby Custard." He listened too as well and went over to the Tubby Table with his Tubby Custard along with Laa-Laa and Po. Tinky-Winky went last and made his Tubby Custard, but when he got to the spilled Tubby Custard on the floor, the narrator warned him, "Be careful, Tinky-Winky, don't step on the Tubby Custard." After the narrator warned him again, Tinky-Winky didn't listen when he slipped onto the spilled Tubby Custard as he goes around the house and slid up the slide. Just then, Noo-Noo came to the rescue as he tidied up the Tubby Custard that Po spilled. When Tinky-Winky got back inside, his apron/bib was very messy, so Noo-Noo cleaned up the Tubby Custard that was on it. After that, Tinky-Winky pat him and said, "Thank you, Noo-Noo." After he got to Tubby Table with the others, Tinky-Winky realized that he hasn't got any Tubby Custard left in his Tubby Custard bowl. Dipsy got the solution! He poured some of his Tubby Custard into Tinky-Winky's bowl. Then, Tinky-Winky thanked him. At last, the Teletubbies enjoyed the Tubby Custard until the Magic Windmill spins. The Teletubbies looked at it and said "Oh! Uh-oh!" and run away for the Television Transmission.