I'd trade you my stepdad. then you can kill him and trade him back where I'll later stuff him and send him to museum of Ripley's Strange but True.
Feed it to the homeless. Cut it up, put the pieces in bags, and throw it in a dumpster. Simple but effective, though a bit messy. Go to the cemetary, and bury it in someone's grave, right above their casket. Preferably a newly buried person (so the disturbed soil isn't noticed) Or, weigh it down (cement shoes probably), charter a boat, sail out past the continental shelf, and anchors away!