Book excerpt: A collection of Courtney's columns from the Texas Monthly, curing the curious, exorcizing bedevilment, and orienting the disoriented, advising "on such things as: Is it wrong to wear your football team's jersey to church? When out at a dancehall, do you need to stick with the one that brung ya? Is it real Tex-Mex if it's served with a side of black beans? Can one have too many Texas-themed tattoos?"--Amazon.com.