What's Wrong with This Nintendo Ad?

Remember that old advert where a couple of kids are supposedly playing a Mario game on a Nintendo Entertainment System? Did you ever spot anything wrong with the advert or just took it for what it was?

Nintendo advertisement
While the last 3 are just silly, I would add that only one kid is actually looking at the TV, there’s a lightgun in view which isn’t needed and they aren’t very good parents if they let their kids put their faces so close to the TV screen.
As we all know, ads like these are mostly for ‘illustration/demonstration purposes only’, which is why they tend to have a lack of attention to detail!