Urban Dictionary: sphincter - Fuck sphincter
- Views: 973 823
Anal sex or anal intercourse is generally the insertion and thrusting of the erect penis into a .. Repetitive penetrative anal sex may result in the anal sphincters becoming weakened, which may cause rectal prolapse or affect the ability to hold in. Plus: tips on relaxing your muscles during sex, controlling your pelvic My external sphincter (butt hole) can stretch/relax; I get to control when.