Indianapolis Colts linebacker Erik Walden tore off Tennessee Titans tight end Delanie Walker's helmet and proceeded to head-butt his opponent.

Why?

"What got him riled up? I was whupping his butt, that's what happened, and the cat couldn't take it when he was getting whupped,'' Walker told Tennessee reporters. "He got frustrated, and he should have been ejected for what he did. That's bush league and that's the type of stuff we don't need in this league."

Walker caught 10 passes for 91 yards and a touchdown.

"I threw a punch at him; I'm not going to lie about that. It's on film,'' Walker said. "But that was just a reaction. You head butt me in the face because I am beating you? C'mon. I whupped on him the whole game, and I'm going to whup on him again in two weeks."

Although Walden got a personal foul, he wasn't ejected. A fine is likely coming.

"It was a selfish act," Walden said. "It could have cost my team bigger than I did. I lost my composure. It something that can't happen. It wasn't really something he did, it was ticky-tack. I can't allow myself to take it that far."

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Aaron Wilson covers the Ravens for The Baltimore Sun