Hey /b/ so my gf has a thing for anal play. She wants me to finger her ass and go down on it too and that just kinda weirds me out. Oddly enough I'm actually pretty kinky but I just have this one hang up with anal stuff. I don't want to be fingering her or giving her a rim job and taste or feel chunks of poop inside of her or slide my finger out and see shit all over it. I know she'd be cleaning it but what if she can't get it all out? How do I get over this illogical hang up

TL;DR gf wants me to give her a rimjob and play with her ass more but I'm worried about getting shit in my mouth and stuff (even if she gets an enima). how do I get over my hang up?