sensitive toothpaste

Yesterday morning I heard an add on TV for sensitive toothpaste.  I listened closely and they repeated that phrase several times.  Now I have heard before of toothpaste for sensitive teeth, but this sounds really special.  How sensitive can toothpaste be?  Will it hold my hand and say "There, there" when I made a mistake?  Will it listen when I want to share my woes?  Will it hug me when I'm feeling blue?  Sensitive toothpaste sounds wonderful.  Cheaper than a cat or dog and a lot less hassle than a spouse.  I'm going to rush right out and buy some.