I abused a dead sheep

It was a spring afternoon when me and my two friends were camping in the forest. We decided to go on a stroll down the river when we seen a dead sheep that had been caught up on a fallen tree in the water. One thing led to another and before we knew it we were throwing boulders off its scull and seperating its horns from its head. Then my friend Eddie pulled the sheep out of the water and decided to pleasure the sheep orally and then finally having sexual entercourse with it. I feel so ashamed that i let him do it. I dont know what to do