Cabling is a person who is the opposite sex of what they were born as. The people who have changed their sexual orientation believe that they are not comfortable being straight, so they decided to change because that is what they truly desire.
A statement describing hypocritical behavior on par with an obese individual crudely commenting on someone else's weight. A more up-to-date version of "A pot calling the kettle black", because everybody knows a porlty individual these days.