After pulling out a pistol and demanding a working penis pump, a man fled from a St. Paul adult video store and sex shop Wednesday evening and remains “at large,” police said.

The man walked into Viva Video, at 918 University Ave., seeking to exchange a penis pump he had purchased, claiming it didn’t work as advertised. The clerk argued that any problems were due to “operator error,” a police report said.

At that point, the man pulled out a handgun and pointed it at the clerk’s head, again demanding a replacement for his used pump. He fled without a new pump, saying he’d be back.

Police have limited information about the suspect and have not made any arrests.

Tad Vezner can be reached at 651-228-5461 or follow him on Twitter @SPnoir.