A Binet jockey is slang for a psychometrician: someone who administers psychological tests. From the perennial instrument, The Stanford-Binet Intelligence Scale. This term may convey anything from affection to scorn, depending on the context.
As a M.S. in a school system, Bettina was nothing but a glorified Binet jockey; but it paid the bills.
Incident in which you take a dump, and the toilet splashes you back in perineum. This is different from a regular bidet in that it's the toilet water that's splashing you, not a directed tap.
As a rule, this nearly never happens at home, and it frequently happens when you're forced to use a stall with overtly nasty waters or after you've already urinated.
person one: I'm a little worried. I had to use the portajohn at the airshow, and it gave me a spontaneous bidet.