I have that feeling afterwards and the next day but have never actually had the problem of not being able to hold it. Actually, I feel like I have to go when I don't. I only have anal when I am in the mood for it, not when someone else wants it - when I do..so I don't do it often enough, or maybe consistently is the better word, to determine if it goes away.
Her pussy is
tighther than her ass is? That just seems unnatural... Have fun!
