Why is my pulse elevated, my pupils dilated and my body hair erect? Because OG punk/thrash masters D.R.I. — Dirty Rotten Imbeciles — are playing the Arcata Vet's Hall tonight at 7 p.m. ($20/$15 advance). And although I have listened to them since I was knee-high to a grasshopper, I have yet to see the esteemed Messrs. Brecht and Cassidy live. My inner disaffected youth is knifing his way out of my pathetic, aged carapace to cry havoc and let slip the dogs of war once again. Deathwish, Scythe and Scum Lourdes provide support.