Well if you are a fan of dirty ass to mouth, check Rocco's Pov 7 scene 5 out where Rocco trys to get Helena do some ass to mouth while there is visible shit on Roccos dick. Some hilarious conversation ensues and finally helena sucks the dick

atleast on 16min mark forward

Then after 19min mark or so Rocco wants to fuck helena in the pussy, but helena wants that the dick is cleaned first, where rocco replies Ok but you must clean it with our mouth and some hilarious conversation comes again

Funny and in some way quite hot scene.
Edit: The scene is in Rocco's pov 7 scene 5 on rocco's website and in Rocco's pov 5 scene 4 on the DVD.