Chocolate Bobsled
Similar to titty-fucking a bitch, after shitting on her chest.  The only difference is....instead of shitting and then titty-fucking a bitch, you, after ass fucking a girl, if and only if she gives the shitty d.  You then rub your shit encrusted member, in digust, up and down her ass cheeks.
Aww, man after I ass fucked Janet, she gave me a shitty dick.  So I gave her the chocolate bobsled.  All over her ass.