"TTP – Ten Tarleton Peppers" (1921) and "TTS – Ten Tarleton Sisters" (1923) are the two oldest spirit organizations on campus, also in the state of Texas, and are precursors of the "Purple Poo", a secret organization which promotes school spirit. The members in this organization keep their identities secret by appearing in public in costume. The still-secret organization gathers to make "Poo Say" signs each Monday night. The "Poo Say" signs appear on campus every Tuesday morning and occasionally comment on campus political life and student life. The "Poo Say" signs are nailed to the trees on campus and most are designed to promote school spirit.