Last night as I was just getting to sleep, I felt Quill hop on my bed and walk towards my pillow. What was funny was that he knew I was asleep, so he stared at me for awhile and when I opened my eyes he said "mrp mrp!" (it sounds exactly like someone saying a friendly hello) and went to his little corner to sleep. He does this sound only to me, it's his special greeting. I've never heard it said to my parents. He will meow and chirp to them, but his mrpmrp is our secret handshake. It's so sweet. Sometimes he'll be sitting on the nightstand in the morning and wakes me up by his mrp mrp and start purring the moment I wake up. Do your kitties have very exclusive greetings to you, and you only? What do they say?