Mine does that too, I used to live in an apartment where the bathroom had a really light door handle (door made of glass) so he went there and meowed in the shower since that was his favourite space to meow. Now I live in a flat with crooked door frames, so every door needs a solid push. The cat stands on the washing mashine with front paws on the handle, and meows at me since it isn't opening. He jumps at the door handle of the front door, gets spooked by the keys and runs full tilt to the living room to jump on a window. He knows the front door is locked, but I guess he doesn't care