AUSTIN (KXAN) – Police found a nude man on the University of Texas drag Saturday jumping and thrusting himself on two separate bystanders, according to an arrest warrant.

Police said they found Nathan Pearson, 30, stark naked near the Church of Scientology at the 2200 block of Guadalupe Street. When authorities arrived, Pearson was thrusting from a “piggyback” position on one man’s back. Police tazed Pearson before handcuffing him, the affidavit states.

Police said he also bear-hugged a 66-year-old woman. While squeezing the woman, he repeatedly said “grandma.” The woman told police Pearson pressed her face against his chest so hard she couldn’t breathe, and she got his sweat in her mouth.

Pearson was perspiring heavily during the incident and randomly shouted that he was Buzz Lightyear, according to the arrest warrant.

Pearson has been charged with injury to an elderly person, a third-degree felony, the warrant states.