She was very curious about rectal temperature taking and she convinced him to show her --- on himself! So it was off with his underwear and the thermometer was in his ass...and she started stroking him. Then, she wanted to see more so she convinced him to let her slide a glass dildo in his ass to bump up against his prostate. She moved it in and out of his ass, and rubbed his balls, while he jerked off until he came!