For awhile now, Tyson has been narrating things. It's like he's reading a book. He mostly does it when he's playing with his trains - he has them talk to each other. He'll say things like "hey, wait for me, said Thomas." "I'm driving right next to you, said Percy." etc. Lately he's done a couple of other ones that really made us crack up.
(Coming down the stairs after nap, holding a train) "Hey, we're HUNGRY! Said Tyson and Percy."
(Steve was banging a toy hammer on the carpet) "OUCH! Said the carpet."