Steamroller is this great game that Rich invented. He tells (read makes up) one or another lovely story of something his Dad did when he was a child and then always ends the story with a very quiet and gentle "and do you know what my Dad did?" Nathan says with a knowing grin..."what?"
Rich exclaims: STEAMROLLER!!!! and proceeds to roll back and forth over my child.
Nathan loves this game.
And after steamroller is over...they just plain roll about.