The crippler occurs when an individual is taking a shit and they are hunched over in pain, ass naked, and basically "crippled" due to the sheer intensity of their dump.
I'm sorry but I can't make it to the gym today. I'm ass naked, hunched over on the shitter because of my crippler.
Another term for sexual intercourse, usually the rear entry position.
The idea is that the man's vigorous performance will inhibit the woman's ability to walk immediately after intercourse. This is of course a complete fallacy.