My ex wife used to fuck me with her dildo till she made me buy her a strap on to use on me which she did regularly but she insisted the dildo part had to be bigger than my cock. Actually caught her out one day using it with gusto on her friend Marie fucking her cunt. I watched the whole affair for nearly 2 hours till I revealed myself. It was horny as hell but she hurt me the following night when she pounded me VERY hard.
As I have a small penis, four inches when fully erect , I tried to get my wife to experience sex with a black guy with a much larger penis, she always refused.
I started buying realistic dildo’s starting with one around the size of my penis. Then gradually buying larger ones . Then I bought a large realistic strap on one . When I turned her head enough to use it . She became addicted to to it ‘s size openly asking me to use it .