Monkey Barrel, EdinburghZero per cent alcohol? Ghosting? ADHD? Our self-flagellating host has a skewed take on them all You could write theses on comedy's relationship with social maladjustment. Many a standup, we imagine, was once an awkward kid making people laugh to fit in " and not all of them grow out of that awkwardness. Dan Rath is a comic as uneasy in his skin as the most afflicted of classroom misfits, bare…