What?
Huh. At least now I know what one of my girlfriends from way back when was going on about when she was shouting: “Don’t blow into it! You’ll kill me!”. I should have had this thread then.
She was referring to her vagina, though, not her ass, lest you think I’m *completely *weird.
Because they thought that meant it was really good moonshine.
There’s a love-it-or-hate-it book on pregnancy called What to Expect When You’re Expecting. In several editions (I don’t know if it’s still in there or not), there’s a Q&A that concerns whether or not it’s safe to receive oral sex if you’re pregnant. The authors caution that it’s possible to get air into the vagina during oral sex, and from there into the uterus and the uterine artery. This is more of a risk during pregnancy than not pregnant because there are so many extra blood vessels and capillaries created during pregnancy to support the fetus and placenta. For reasons I mentioned above, I think the risks are minimal, at least to judge by every bout of cunnilingus I’ve been blessed to receive. The air introduced is pretty small in volume, certainly not enough to kill anyone. If actually blowing into the vagina is part of your repertoire, you might want to reconsider, however. 
The whole “OMG! Oral sex during pregnancy will KILL ME!” entry is oft’ repeated as a reason for people to not like the book - it’s fairly comprehensive in cataloging the myriad of ways you can suffer during pregnancy. Some people would rather not know. Me, I like that sort of thing.
You ever seen one of those toy rockets you put water in and then pump it up with air?
I gotta say, even without any chance of death… just can’t see what it would accomplish.
Well, I wasn’t doing it on purpose! I was just kinda, I dunno, breathing through my mouth, as my nose was clogged or something. Complete accident.
It would give a new meaning to “blow me”, though, I suppose.
Or nostril.