I just shower afterwards (preferably with my partner) and it leaks out in the shower. I don't want that shit in my undies.
My wife really enjoys the feeling of my cum in her ass. The other night we had vaginal sex (a rarity for us). After we finished, she asked me if I came. When I told her I did, she said that was another reason to like anal sex, that she can feel my cum in her bum.
Well, just go to the toilet soon after and push it out as if you are having a bowel movement. If you bear down enough, most of what would otherwise leak out will get pushed out right then and there. Though, IMO I see nothing wrong with keeping it inside you.
It can leak out??? That's never happened to me and frankly it sounds kind of creepy... Although I almost always go to the toilet afterwards to push it out, which isn't the best sensation in the world either. I don't like having cum in my bum either, but if for that little bit of discomfort my loved one gets 10x more pleasure, then it's worth it for me. ... Although whenever I'm at his place and we have anal sex I ask him to come outside, because his bathroom has a really thin dor and you can hear *everything* in there... and I realy really don't want his flatmates to hear the strange sounds that arise from pushing cum out of your ass. So in that case, he has to be the one sacrificing himself...
Actually, I wasn't exactly write by mentioning the phrase "otherwise leak out". An asshole that is not torn stays closed tight enough not to just let cum leak out. What is already on the outside would be the cause of the "wet" feeling or mess in the panties, but I'm sure most everyone would wipe or wash after anal sex, if they were near a bathroom or had towels on hand. Cum leaking out of the vagina after sex is called "back flow". Certainly the anus holds most all moisture in, unlike the vagina.
That's what I was thinking.. surely the myth of cum leaking out afterwards is as untrue as the myth that the asshole stays stretched after anal sex... If you do it right it immediately snaps back to the tight little thing it was before!