Isaac shoved him hard, his hand coming back to hit him as hard as possible. He was angry and Marcus was the reason, it felt good to hit him. He had awaken to find himself with tits and it had gone downhill since then. The fact he just assumed he would shag Lavender really was the final straw.
Wrapping his arms around him, he fell to the floor with him and immediately pushed up to try to straddle him so he could hit him. His elbow bumped a picture on the wall, knocking it off with a crash. The picture fell and hit a decorative table, knocking a vase off that shattered on the hard floor. Isaac didn't even register the destruction as he focused all of his energy on pounding Marcus.