horse obsession

Tommy loves horses. He says ho ho, for horse and all day long it's ho ho, ho ho, ho ho, ho ho, ho ho, ho ho, ho ho, ho ho, ho ho, ho ho, ho ho, ho ho, ho ho, ho ho, ho ho, ho ho. I'm not kidding! Most night's he sleeps with all his toy horses but once in awhile he'll sleep with a horse book or two. It's starting to wear on me but It is better than the baby obession he was going through a few weeks ago. All day, bebe (that's baby in tommy talk) bebe, bebe, bebe, bebe and pushing his sisters toy stroller around with a doll in it saying bebe, bebe, bebe, bebe and crying if we couldn't find a doll for him to go to bed with. I wonder what the next obsession will be?