>Laura thumb is tucked in - demon horns
Hook 'em Horns is the chant and hand signal of The University of Texas at Austin. Students, alumni, and fans of the university employ a greeting consisting of the phrase "Hook 'em" or "Hook 'em Horns" to show school pride.
The gesture is meant to approximate the shape of the head and horns of the UT mascot, the Texas Longhorn Bevo. The sign is made by extending the index and pinky fingers while grasping the second and third fingers with the thumb. The arm in use is usually extended, but the sign can also be given with the arm bent at the elbow.
https://en.wikipedia.org/wiki/Hook_%27em_Horns