While Sirius was far from big, he had muscle and that wasn't just for show, either. He also trained fighting duels, more than anything, which means that tripping him wasn't an easy feat, he was used to being hit by blasts and worse.

"I know that." No arguing with the madman, especially when he didn't entirely disagree. His grip around Rudy's wrist tightened before he suddenly did allow himself to be tripped, falling back while trying to keep their legs entangled to pull Rudy down with him.

"But she wanted me."