Oh great, as if the 19th century passion for phrenology wasn't bad enough, we've now surpassed it by inventing arsomancy (or whatevery the proper term is for "divination by buttox").

Yes, just as phrenology could predict human behavior by reading the shape of the head and the bumps on it, arsomancy allows you to predict terrorist behavior by the jiggling of passengers asses.

Following the same logic as phrenology, if your butt wiggles like a terrorist, you must be a terrorist!