My wife finally wanted anal during her pregnancy

She is a bit chubby, before being pregnant, but has a nice body, great legs, small tits which I really like, and a nice butt. I'm partial to butts and love to fuck them, male or female. She would suck, swallow, fuck in front of others, be shared, she'd done gangbangs before, even lick pussy and recruit her women friends to come to bed with us. The one thing she wouldn't do was anal. She didn't want it, to her it was too dirty, though I really tried and tried. She'd even arrange for us to have threesomes with some of her friends who took cock up their asses and would talk to me during asking me if that was what I wanted. I did, and I got it. However; what I really wanted was to pop her virgin poopchute.

It was her fourth month of pregnancy, and she was a sexual dynamo, a true slut. She couldn't get enough cock. Then one night, the lights off, I'm banging her pussy and she tells me to stop, she pulls my cock out of her pussy, and pushes me off. She rolls onto her side and I'm behind her. "Put it in my ass baby, I want you to do it in my ass" she whispers. "You want what?" I asked. She repeated it again, she wanted my cock up her ass, she wanted me to shoot my cumload in her "shithole" to use her words. I was in extasy. I asked her again if anyone had fucked her ass before and she again told me never. She grabs my very wet cock from her cunt, which gets super wet, and after rubbing some juice from her pussy to her asshole, she positioned it at her hole. I went slow and got the head in. I'm pretty thick so I took it slow but once I had about an inch past the head into her butthole she jams back on my cock and sinks it in. Then she starts yelling, and screaming and moaning "Fuck my dirty shithole, buttfuck me, give it to me, I want your cock reaming my asshole out, oh god, buttfuck me baby, buttfuck me, make me your dirty little buttwhore" I was going slow and she started speeding up so I was slamming into her virgin asshole, holding onto her baby bump and kissing the back of her neck and her ear. All of a sudden she pushes onto me and is cumming. Screaming and yelling as she does so. I shoot at the same time then just hold it in her. "Oh shit baby, take it please, take it out" she says. I take my cock out and she bounces up and I can hear her shitting in the bathroom.

Coming back to bed washes off my cock and gets under the covers, kisses me and thanks me. She thanked me for reaming out her shithole. She got up two more times during the night to go shit. It's been the first time but definitely not the last. She's in her 5th months now and I'm guessing I've gotten about 15 BJs 15 pussy fucks and probably fucked her shithole 30 times. She insane with anal now. She is truly my little buttwhore