Dead?

The other day Kirby was laying in the hallway.  Adam walked out of the bathroom, looked at Kirby and said, "Oh, Kirby died."  Ummm, no, Kirby is just laying down.  Today we were out shopping and there was a person laying down at a picnic table.  Once again, Adam said, "That guy is dead."  I'm not sure where he got this lying down = "dead" thing from.  The only thing I can think of is we had an ant invasion last week and one of the ants was dead on the floor for awhile before I finally vacuumed it up.  Adam kept looking at it asking why it wasn't walking away and we had to explain that it was dead.  Apparently we did not explain it very well....