Close the shades
A variation of the term "shut up," meaning to stop making noise.
Person 1: Oh, I just love having the shades open! It brings in so much sunlight that way! Don't you just love it? I can't get enough of that sunlight! Oh, I tell ya, I-
Person 2: Dude, close the shades!
Person 2: Dude, close the shades!