Making you worship my fat ass before I piss and shit all over your face! Some slight rectal prolapse occurs since the "load" was not to big

Kat oils herself down and turns you on with her body. She bends over and tells you that she wants you to use her shit as lube. While you try to hold a straight face, she notices that your getting bigger with her every word. After she gets you "dirty" she bends down and tell you to clean up her ass while you jerk off. She plays with her ass and talks real dirty to you. She turns around and spits on your cock, adding more lube. You can't believe you are using lube from Kat's ass to get off. You are so turned on and can't hold back any longer. Kat opens her ass up wide. She tells you how to cum using her shit as you eating her booty cleaning it all up for her.