>Your fluffy pony gave birth to a litter containing a runt
>It rejected the thing of course.
>You could probably change it's scent with something, but you have a much better idea.
>You hold down the mare, still weak from giving birth, and burn out it's nose and sinus cavities with a hot 45 watt soldering iron.
>Now it's face has a big festering hole where it's nose should be, right down to the bone.
>It isn't rejecting the foal anymore.
 
>You can't wait to sit out on your porch with fluffy pony on Halloween. It's zombie fluff costume is going to be top friggin' notch.