Doing Laundry

I came home the other evening and found a load of laundry in the dryer with four random items of clothing.  Chris told me that Sam had wanted to do laundry so they ran a load.  I thought it was a little weird.  I realized what Chris meant the next day, when Sam disappeared into the back bedroom, opened my hamper and pulled out clothes.  He carried them one piece at a time to the laundry machine, saying, "wash, wash."  I opened the washing machine door and Sam put them in, hanging halfway in the machine himself.  After five or six trips back and forth from the hamper, he pulled the laundry detergent off the shelf and onto the floor.  He proceeded to walk around the cap in a circular motion until it came off (so much for child proof).  He then looked at me, attempting to pick the bottle up, and said, "go?"  I poured it in the machine, put it back (on a much higher shelf), and Sam closed the washing machine door saying, "wash!"  He stood on his tiptoes and pressed buttons, saying "go, go," until I pressed the start button.  He waited until the cycle began with his hands pressed up against the door of the machine, contentedly said, "wash," one last time, then left the kitchen.
Now we need to teach him to fold the clothes.