He needs to get his lazy self down to the DPS and get an ID.
http://www.sos.state.tx.us/elections/pamphlets/largepamp.shtml
•Texas driver license issued by the Texas Department of Public Safety (DPS)
•Texas Election Identification Certificate issued by DPS
•Texas personal identification card issued by DPS
•Texas concealed handgun license issued by DPS
•United States military identification card containing the person’s photograph
•United States citizenship certificate containing the person’s photograph
•United States passport
It’s a mite pricey but the birth certificate needed by most places can be had by express mail. I guess someone could still claim to be someone else and get that other person’s birth certificate. But at least someone vouched for his or her identity.