I think your buddy probably watched one of the myriad of "50 cal Sniper kills Taliban" videos on YouTube, which are really rock-chuck hunting videos.
I tried setting some of those jackwagons straight a couple times, even directed them to the original video "Varmint Safari" with little success.
Like this one
. (warning, graphic marmot content).
And it you REALLY want to make yourself dumber, read the YouTube comments.