figured something new

if you lay down with your head on a pillow and yours knees up bent and clench(tighten your butt)your butt upwards or actually it'll automatically tighten while you masturbate(like the butt work out position where you clench you butt upwards), and masturbate while doing that ....DUDE!!!!!! yesss !!!! 👌👌👌 not only masturbating but also working that ass