We can show very gruesome dismemberment and lots of blood and guts.
But heaven forbid they say **** or ****. No, instead we have to have a loud obnoxious beep that lasts for 10-20 seconds for every 1/2 second curse that leaves a character's mouth. The Last of Us demo was nothing but a long string of "BEEP". You could barely understand what the guy in the night club was saying during the Watch Dog demo because of it.