Peter Pettigrew laid on the floor as Harry walked slowly forward, the sword of Gryffindor being spun loosely in his hands. Peter had wanted to beg for his life but Harry begun to speak in a soft strange sing song tone:

I killed a mouse today

Used my sword and struck it in the head,

Crushed its little skull and now its dead.

Tossed its body to the cats, watched as the fight begun.

Laughed at all of their fun.

After all its not coming back again nor is it really a sin.

Cause after all nothing really matters...