What is the most unique word/phrase your cat understands?

Sophie is too young to understand yet.

But with Rosie it's ' Do you want some sweeties?'(Treats).

'Come on, bedtime'.

'Do you want some dinner'

my kitten is also a bit to young to understand yet, but he understands "dinertime" and "bed time" because as soon as i say this he run straight into my bedroom

Oh, I thought of a couple more rather unique ones that Red Cat understands. He knows that "It's safe" means that any stranger, neighbor, or relative who has been here is gone and he can come out of his hiding place in the storage room.

"Go get 'em" is my invitation to Red Cat to go chase a crow or a gull off the railing of my deck. Red Cat is happy to accomodate. Purdy may know what that means, but is more reluctant to try to chase that large a bird.

My boys know Its time for bed, they'll run up the stairs before me.
"OK, mommy has to get up now" usually disrupts their sleeping time in my lap. Frantic will jump down quickly, Pip will sit and look at me for a few seconds, then jump down.
If Pip can't find us, he'll sit in the middle of the room and cry. I'll call out We're in here and he'll come running in.
If Pipsqueek is using my carpet as a scratchpost, I'll just say Pip stop, and he'll walk over to the post.
When they were teething and playing hard as kittens, if they bit too hard, I just said OWWW! and they stopped. To this day, the word OW makes them stop whatever they are doing to look at me.

"Who's got the mousie"- Sam runs to their basket and gets the mousie to play fetch.

"Get the mousie, bring it back"- Sam brings it back and drops it in my hand

"Want some food"- they wake from a dead sleep and run to the kitchen

"See who it is"- they run to the door and living room window

"Wanna go outside"- they run to the backdoor to sit on the porch

Sam knows "The dog's here!"

I live above my work, and when I head downstairs in the morning, Sam usually runs ahead of me down the stairs. My co-worker started bringing his dog to work, and Sam hated the dog. (He's much better now, will just walk by and ignore the beast, instead of hissing, spitting and growling).

But if Sam is heading down the stairs, and I say "The dog's here!", he stops mid stride, stares at the door, and then runs back upstairs.

Red Cat has learned a new phrase in the last few days. "Don't lick your belly!" He's been doing this for over a year now, he has licked all the fur off, the skin is rough and red, and he has had secondary infections. We've gone through umpteen tests. Today I brought home an e-collar, so I have yet to put that on him. If I can manage to keep that on him for a few weeks, that will tell us whether the problem is behavioral (as we suspect) or if it is a dermatology problem.

They both know the usual words. Beau will come only if I say "Beau come" and not just call his name. This was hard for me to get used to. (I'm used to just calling the cats name).
Felicia tries to get me up 15-30 min before the alarm goes off. I always say to her: "Go lay down and wait for the alarm to go off." It might take a couple times, but she will go lay down.

Lets see ...both cats know...you want to go outside? they will head for the door....also treat.....Cosmo ,if you ask him wheres his ball ...he stares at you as if he his thinking really hard..then he meows and goes looking for his ball and brings it to me.....such a cool cat.....Newman every night waits for us to go to bed...I will ask are you ready for night night...he will meow then race to the top of the stairs roll on his belly for a scratch then jump on the bed......then when its time for them to go to bed in the basement....well say time for bed boys...they jump up and race us to the basement door..

my husband has made up this little 'song' for Tipsy whenever he wants to get his attention - its so funny (and he says he doesnt like cats!!!).
The words are - Tip, Tippers and the Tip Tipsters... Tipsy comes running whenever he hears this no matter what he is doing !!!
its so funny!!!

Loki knows NO - whether he chooses to hear it is another thing

and then there is :

SOUPPIE = which means wet food.
IN = which means he not supposed to runon the outside of the banister on the
DOWN = when jumps on top of the banister

and there are the selective words which I know he understands but chooses to ignor *LOL*

All of my cats understand the word "tuna" - they loooove it and get all excited and meow when I'm opening the can for them. All I have to do is get all excited and ask them if they want "tuna" (I say it a certain way) and they know.

Tinkerbell knows "birdy" - she'll get all interestd, turn her head at me, and run to the window and look outside.

They also all know their names, I think they sort of know each other's names, and I know they know "no."

Oh, and they all know their nicknames, too...even though some of them aren't related to their names.