Why do people take the second or third copy off a pile of Readers?

Dear Mr. Answerer-of-All-That's-Weird:

Why do people take the second or third copy off a pile of Readers?

-- Crazy Cats of Clairemont

I thought everybody knew. That's where all the good stuff is. The top copy is all shredded. The second copy is all ads and boring literature. It's the third one down in the stack that has all the nudie candids from our last Christmas party, excerpts from Mayor Golding's high school diary, and shots of the elves in thong bikinis.