K sits naked on the exercise ball and does his best to remain balanced while mainly using / flexing his abdominal muscles / abs. There's a little bit of cock play but mostly this is an ab-lovers clip. - HfK studios, hetflexk, heteroflexible, heteroflexkblek, xdress, crossdress, cross dress, bisex, bi, gay4pay, older, mature, skinny, thin, muscular, vascular, closet, exhibitionist, amateur, straight, tranny, trans, transvestite, twunk, ecto, ectomorph, slim, veins, veiny, vein