Reese Witherspoon's young son has nicknamed his famous mum 'The Mommy Trash Compactor' because she's obsessed with garbage. The super-tidy actress admits she's a clean freak - and even her trash has to look good. The Oscar winner tells U.S. TV talk show host Ellen DeGeneres that she insists on making sure her garbage is never overflowing or out of control. She says, "I like to throw a lot of things away, particularly at Christmas. It makes me a little crazy when the trash is overflowing. "I put on rubber boots and I literally get into the trash can and I stomp on the trash. "Sometimes I'll sneak and look at the neighbour's garbage cans and see if it's kind of empty. I'll wait, literally until the middle of the night when the children are asleep, and I'll take my extra garbage and I'll put it in the can."