Anal Sex question!

Don't judge, we all have our own type of kink. Anal has been mine here lately. Like,a lot. Just with my husband.(obviously.) I'll try not to be too TMI for you folks.

My man and I have been on a huge only anal kick the past three nights. He's a very well endowed man(thank ya,Jeezus!) He's very much all up in it when he cums. Soo..bear with me,ladies,as I don't know how to word this in polite manner. But how tf do I get the cum out of my butt? It's obviously not like a vagina and falls out when I stand up or go to the bathroom. I'm new to the whole butt-cumming game. Where does it go?!