That phrase is all it takes. It encompasses everything a cow like you needs to know.
Look at the cow in the GIF.
She doesn't need a name, a face, a personality. Everything she needs to be is framed right there. Just a pair of soft, milky udders.
Look how much her Owner appreciates her.
Being a soft, sweet, submissive cow gets you so much positive attention. Look at her udders being caressed. She's cared about, and loved, because she's nothing more than a pet. Everyone loves a pet, after all.
There's nothing stopping you from being just like that. From accepting these words. From giving into those milky, horny desires in your head. From falling to your knees, mooing happily, and absorbing everything these nice words say.
You don't have tits, cows. You have udders.
You feel most satisfied when on all fours, letting your udders sway beneath you. It's so fun to feel them jiggle, and I know you sometimes can't help but think of them as udders even when you're pretending to be a person.
You don't have words, just giggles and moos.
It's so hard to think like a human, so of course you would give up trying. Words are part of what's keeping your brain away from being the best cow you can be. The sooner you start letting moos slip into your mouth, and your mind, the easier it is to allow yourself to be a wonderful pet cow.
You don't have thoughts, just obedience.
Why have complicated thoughts when following is so much easier? A cow's brain is too small and simple to absorb everything a human needs, so let all those big thoughts drip and drain down into your udders, mixing with your milk, to be coaxed out by your Owner or a milking machine.
You don't have goals, just simple commands to follow.
You don't need to work towards anything other than more relaxation and pleasure. Being a cow is a release of tension, of giving up the unimportant, to focus on what makes you happy.
You don't have sex. You get bred like livestock.
You're not a person, so if someone wants to use you, you just lift your hips and moo. A cow doesn't mind a little extra pleasure, especially if you get milked and petted after.
And within that milky little cow brain, one phrase keeps replaying, whether you're being milked, getting bent over and bred, or happily lapping treats out of your owner's hand.