He thinks the neighbours are going to hate him forever, so he takes the dirty, chewed-up rabbit into the house, gives it a bath, blow-dries its fur, and puts the rabbit back into the cage at the neighbour's house, hoping that they will think it died of natural causes.
A few days later, the neighbour is outside and asks the guy, "Did you hear that Fluffy died?"
The guy stumbles around and says, "Um.. no.. um.. what happened?"
The neighbour replies, "We just found him dead in his cage one day, but the weird thing is that the day after we buried him we went outside and someone had dug him up, gave him a bath and put him back into the cage. There must be some real sick people out there!"