Possible Clues:

• Dallas coll
• Obscene stuff
• Home of the NCAA’s Mustangs
• George W. Bush Presidential Ctr. setting
• Home of the George W. Bush Institute, in brief
• Sch. that hosts the George W. Bush Presidential Center
• Mustangs’ sch
• It's near the LBJ Library
• Sch. hidden in "walrus mustache"
• Dallas campus, familiarly