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.

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