Here's another one, however I am afraid it took a bit longer than 8 minutes.
Just started with something and kept adding lines till it looked a little more like something recognizable. I think the face could use a little more expression, and the whole thing could use a little more depth. And maybe I should stop critiquing my own stuff now.
Woo!
Tzurial, I like the profile of the guy in the back. The front guy looks a little squished, but nice job on the nipple.
Ani-O, I know what you mean about wasted lines. This little exercise is forcing me to take a little bit more time with the sketching, rather than putting lines all over the place. Just got back into drawing after what seems like a good long time, and this is a great way to practice. So thanks!
Example of lines gone crazy