I wouldnt call this guy a friend, but someone at my local game store a few years ago ( he was probably about 18 at the time) was one of the worst model builders I have ever seen.
He played chaos for warhammer 40k, and rightly so. He would squeeze the glue bottle like it was toothpaste, and use an amount of glue the size of a pea for gluing on a simple spike or skull. As if that is bad enough, his vehicles came out crooked, sometimes he wouldnt even glue the tracks on them. His infantry looked like they had tumors all over the place from all the dripping glue...
And no, he didnt play nurgle. lol
-Matt