Black cock riding challenge. Sub task

Custom shot clip. How hard is to ride a black cock for 5 minutes non stop? And in a certain position? I was asked to install a realistic black dildo with a suction cup on a bucket and to ride it with my hands on the floor not letting the toy slip out of my asshole, to ride as hard as I can. It wasn't an easy task. Shot from the same angle, no dialogue. Tags: BDSM, submissive girl, riding, black cock, challenge, MILF, kink, hold up stockings, anal masturbation, solo female, squatting, watermarked