when you tell a DC "this is a dream" how do they react?

I tried it again! The DC replies to everything I say except for the part that "We're in a dream!" It's like she had no answer for it so she kept silent.

The people I know well in life are so perfect they won't believe me, nor will people I've never met.
Usually if I create a person and show them concrete evidence they will accept their existence. I expect them to go fly off or shoot lasers but instead they turn to me and say "oh well gotta go do shopping, good luck with your dream" 0______o

Although I have had only 5 LD's, I think I have told people that I am lucid at least 2, maybe 3 times. They either just don't believe me or act like it isn't relevant and that I didn't say it haha

i haven't became lucid much but one one i was in this back room in a library and it was me, 3 other kids, and a teacher. I randomly did a RC and said out loud " I'm dreaming " and the other kids got all excited and cme up to me asking me how i was doing this .

Last night I had a funny one. I was in a room talking to a college classmate that I haven't seen in real life in about 18 years and I don't know what triggered it but I thought it might be a dream and I did the thumb through the hand thing. That was kind of funny because I've never done RC before. I just realize it's a dream and I go with it. She was watching me and when my thumb came out of the other side of my hand she said, "That's gross. How did you do that?" I said that I was dreaming and she just said, "Oh that's nice." and walked away.

DC of my aunt witnessed me doing my RC "If this was a dream, I would levitate". I watched her eyes grow big as I started to hover and took off vertically.

I have never told a DC "this is a dream", actually i ask questions like are you him..etc?
But when i do i get either no reaction, confusion or a response through body language.