Sasuke knew that he should feel guilty about stealing the scroll that the Hokage had given to Naruto before they set out to Wave, but he couldn't find it in himself to do so. He needed it to get stronger so he could kill Itachi, and therefore was more deserving of it.
Beneath a jutsu that was supposed to emit a blinding light was a jutsu that was "Guaranteed to stop any enemy in his tracks".
He practiced it several times before the battle and didn't really notice it having any effect. He had a feeling that he'd gotten it right however, since he felt something happening. Perhaps there needed to be an enemy in front of him to have some sort of effect, as it was supposed to "stop any enemy in his tracks".
On the day of the battle, Sasuke decided to pull his devastating attack out against the boy who had trapped him in the ice mirrors that oddly only reflected the boy and nothing else.
The boy suddenly stopped his attack and turned to his master.
"Zabuza-sama!" the boy yelled, getting his master's attention.
"What?" Momochi Zabuza yelled back.
"Can we please trade opponents?" the boy asked.
Kakashi and Zabuza paused in their fight to turn and look at the boy who was begging to trade opponents in the middle of a battle. Their jaws dropped slightly, not that it was really noticeable behind their masks.
"No! Now get back to your fight!" Zabuza yelled back when he finally found his voice.
"What the hell have you been teaching those kids?" Zabuza asked Kakashi as he turned away from the...spectacle.
"I didn't teach him that one!" Kakashi replied as he too turned away.
Zabuza and Kakashi got back to their fight, struggling to ignore the large rainbow that was shooting out of the Uchiha's ass.
After all, who wouldn't stop and stare if there was a rainbow shooting out of someone's ass.