When we first moved into our house about 3 years ago, Kedi thought there was a window above our bed at night. (It was only a reflection of light from the real window- it even fooled me a time or two)
Well, one night he sat on the bed and stared and stared at it for the longest time, then all-of-a-sudden LEPT as high as he could...................well of course there was no window there. He slid down the wall and back onto the bed with this look of total dismay on his face. Thank God he was not hurt at all (just his pride).
I laughed so hard that I woke my husband up!