Happened to me just once. I was spooning this woman from behind as we lay on our sides. We did not use condoms since we were fluid-bonded - but we did use some lube. After I came, I stayed inside her for a while so we could snuggle in the spoon position. After 20 minutes (?), the cum and lube must have dried to both her and me. I tried to pull out so we could clean up, but couldn't. Feel like my cock was stuck to her cunt walls. Anyhow, a little coaxing and turning worked. Within a few seconds, I could pull out.
Ever since then, I pull out shortly after cumming when I am barebacking.