He squeezed his eyes shut, a fushia blush coloring his cheeks as he wriggled uncomfortably, even though Kurt's kisses were so tiny, Blaine still felt every one of them. 

"Blaine sweetie, open your eyes. I'm almost done with you now, and then you can pee all you like." Kurt told Blaine with a smile. Kurt knew Blaine could hold on, Kurt knew Blaine was just a really good actor and was spicing this up a little for them, Kurt knew that Blaine liked to be tested to his absolute limit. That's exactly what Kurt was doing, he didn't actually want Blaine to pee he just wanted to see how far he could push. 

Every little noise Blaine makes just does something to Kurt, he couldn't explain it. He just really loved the noises Blaine made when he was pushed a little harder than normal, and Kurt was feeling a little adventurous tonight. What's the harm in pushing the limits?, he asked himself. 

Kurt pushed one finger firmly in the middle of Blaine's stomach and Blaine squealed, that was just the reaction Kurt was looking for. Kurt knew Blaine would be sensitive on his stomach, which would mean drawing more noises out of him. Blaine gritted his teeth as Kurt pushed with two, then three, then four fingers into different parts of Blaine's stomach. Blaine kept a hold on every drop of urine, not wanting to humiliate himself in front of Kurt. He curled his toes, hoping to God this would be over soon, Kurt had said he was almost done. 

"Kurt, please. I don't think I can hold on any longer." Blaine tried once more, praying Kurt would see that he literally was going to pee if Kurt put any more pressure on his stomach. 

At that moment Kurt pressed at the bottom of Blaine's stomach, and urine was coming out of Blaine's dick before he even registered what was happening. 

Everything seemed to move in slow motion for the both of them at that moment. Blaine, when he realized he'd actually peed all over himself, turned his face to the side so he could bury it under his arm that was still tied up. Humiliation rushed through Blaine as his cheeks and neck burned red, not really believing he'd just done that. 

For Kurt, when he saw he'd actually pushed Blaine too far, gasped and covered his mouth, shock bombarding his senses. Embarrassment at his own lack of control sparked up inside of him as he looked down at Blaine. 

Blaine was lying on his back, his arms still tied above his head with his old Dalton tied. Sunshine yellow covered most of his chest, some of his legs and even some of it went on the bed. Kurt really didn't care about his 986 thread count, Egyptian sheets made of cotton that was derived from pure gold. He didn't care that they were dirty, and that he'd have to try and explain why he needed to wash them twice in two days to his dad. All he really cared about right now was Blaine.