If you think video games are only for kids and guys who still live with their parents, check this out. Someone uploaded a video of their 84-year-old GRANDFATHER playing X-Box for the first time and he LOVES it.

It's a montage of him playing "Halo" and "Call of Duty". And he makes so many overly-excited grunting sounds, eventually a woman yells from the other room that it sounds like he needs to use the toilet.

You can subscribe to his YouTube video and suggest what game grandpa should play next.  I'll go with 'Grand Theft Auto.'