Pseudo-Latin phrase meaning "out of the ass". Used to describe anything pulled or otherwise ejected out of one's ass.
Chase: Can you believe Steve's report?
Carol: I saw it and I don't believe it. Where'd he get those numbers?
Ted: I'd wager a little ex rectumis research.
Carol: I saw it and I don't believe it. Where'd he get those numbers?
Ted: I'd wager a little ex rectumis research.
by mcfm October 15, 2010
Get the ex rectumismug.