Feb27
Anal contractions of a man during orgasmic masturbation
on February 27th, 2011 at 12:50 am
Posted In: Uncategorized
![Muscular contraction during masturbation and orgasm 2/20/2011](/wp-content/uploads/2011/02/Orgasmic_Contractions-2-20-2011_watermarked.jpg)
The tension in the pelvic floor muscles during masturbation (top) and orgasm (bottom, top highlighted). Measurement device was used anally by a 25 year old cis-male. Contact [email protected] to reproduce image.