How do you check?
Would inserting two fingers in her rectum suffice?
(The Archduke of South London I'm in your Girlfriend eating her organs, Sun 11 Apr 2010, 23:20, 2 replies, latest was 16 years ago)

That should do nicely
If she's not vacuous, the fingers should slide out and in again smoothly, easily and at speed. But if she is, there may be a loud popping noise (if the fingers can be removed at all)
(MrOli is ugly, but in the morning you will be sober, Mon 12 Apr 2010, 9:01, Reply)

Thanks man
I now have earl grey on my monitor
(Beelzebub's Ball Bag is pleasuring your wife on, Mon 12 Apr 2010, 15:57, Reply)