I mean why do I have to choose? My tongue is completly capable of pleasuring all three of you (pussy & asshole).
Perfect position for me to give you a nice hard fuck from behind.
Oh yes I would eat your pussy and ass like it was my last meal.
Oh yes I'd clap those cheeks too.
I often find it to be a chore too since it often takes longer than I want butt I always take the time to do it as pest I can to minimize accidents. They're a buzz kill for me. I have a routine that I'll share since maybe it'll help you with yours.
I bought one of these and in the shower (wearing rubber gloves in case of accidents, totally optional) pump in some water, wipe off my butt w/ a paper towel, hop on the toilet and wash out. In the toilet I put down a layer of toilet paper beforehand to prevent poiseidans kiss lol. I repeat this multiple times as needed.
I prefer doing this way verses all in the shower because it's cleaner (poop in toilet instead of shower) and I can take a break between rounds to gives any water and stuff to makes it's way down. Helps prevent accidents I think.
Eating more fiber helps too.