Cum on my ass step bro

I need a reallyyyy big favour from you step bro! I'll do ANYTHING if you just help me out. I see the way you look at me and I know you want a piece fo this big ass. I first strip and tease you, before sucking on your fat cock. I get on my knees and let you fuck me doggy style before cumming all over my ass. Thanks for the favour stepbro!