You believed it, of course, because it was Tom Cruise doing the drawing.
The Tom Cruise-ist moment in the history of Tom Cruise films was the one in "Mission: Impossible - Ghost Protocol" where Tom Cruise's super-agent escaped a 9/11 style bombing of the Kremlin and a false arrest as the main suspect and reunited with his commanding officer and said he was pretty sure he spotted the real bomber while sneaking around the Kremlin, then grabbed a pen and in five seconds drew a sketch on his palm that looked exactly like the guy.