Sexual Relationships 
Sexual Health When it comes to anal sex preparation is everything. You can't just accidentally slip in no matter what porn says. But here's the thing, in porn it does just slip in. Why? Because off camera she prepared her butthole for the "oops I hit wrong hole" scene.
So here's the question, if you can successfully "accidentally" slip it in wrong hole without preparation, does it mean she's recently done the groundwork? If you engage in anal your butthole remains easily entered for a few hours. Which means one of two things, she's prepared herself knowing you're going to pull that old routine or she's recently been ploughed by another man.
If you can "accidentally" slip it in the backdoor does it mean she's cheating on you?
purplepoppy Master
2 5
What Girls & Guys Said
3 30nice "My Take" so what's the question? she has prepped her ass in advance... cock, dildo, or a 3 finger Jam session...
Yeah!
most likely he does that trick often and she prepared
Or you ( the guy) has an oriental-sized penis This could also be a possibility.
I wish I didn't read it I'm not a fan of shit or the unseen germs fans of it spread ass porn is considered gay in porn
My mother told me that most women are cheaters so I just assume that they are
Interesting question, but it's based partially on a fallacy. After engaging in anal a woman's butthole does not "remain easily entered for a few hours". More like 10 - 20 minutes, at most. After that, casually shoving a dick in there is going to hurt like hell.
It is possible... during doggie her anus dilates as she closes to orgasm, her anus then starts winking as she actually cums. Therefore very inviting to plough into it whilst its happening.
You forgot one more possibility:
she always ready for it just embarrassed to bring it up, but really wants it...
Porn is fantasy and never been real...