I have a half orc barbarian with 20+ Str, 7 CHR 7 INT, Spiked Full Plate Armor, and a adamantine magic greatsword. Yet he he has no ranks in intimidate so I regularly get -1 or worse on a bad roll. First time it happened my GM asked how a menacing raging barbarian like that could be so bad at intimidating. I figured since an Orc is only as strong as his smell, he never bathes. Thus when he fails an intimidate check his threats are lost in translation with something he is afraid of but it otherwise harmless.
"GIVE ME THE KEYS TO THE TREASURE ROOM OR I WILL BATHE YOU.....WITH SOAP!"