A christmas carol?

Grandma got run over by a reindeer

Grandma got run over by a reindeer
Walking home from our house on Christmas eve.
You can say there's no such thing as Santa,
But as for me and Grandpa, we believe.
She'd been drinkin' too much egg nog,
And we'd begged her not to go.
But she'd left her medication,
So she stumbled out the door into the snow.
When they found her Christmas mornin',
At the scene of the attack.
There were hoof prints on her forehead,
And incriminatin' Claus marks on her back.

@killyourwildermind