"Can't Touch This!"

"Can't Touch This!" is a Paragon shout that is supposed to cause any touch skills used on allies within earshot to fail.

From the Nightfall skill preview (wikified):
 * '"Without a solid counter to touch-type skills, we decided to add a new Paragon shout called "Can't Touch This," which causes touch skills used on friends within earshot to completely fail. This will allow players to counter skills like Blackout, Shock, or Vampiric Touch more effectively."

Trivia

 * This skill is probably named after the MC Hammer single U Can'T Touch This.