Shock Rating
PG
There's no blood in Home Alone—but it seems like there should be. After all, Marv steps on a nail and grinds Christmas ornaments into his bare feet. Harry, on the other hand, gets burned with a blowtorch on the head. So, there's a decent amount of comical violence.
Also, there's some amusing cussin'—still simmering down at the PG level. Buzz tells Kevin, "I wouldn't let you sleep in my room if you were growing on my ass!" And Harry, while getting creamed by Kevin's swinging paint cans, hollers, "You bomb me with one more can, kid, and I'll snap off your cajones and boil them in motor oil!"
That's a pretty graphic threat, but fortunately, Harry never gets to follow through on it, since Marley bashes him in the head with a snow shovel.