I saw Mommy kissing Santa Claus Underneath the mistletoe last night She didn't see me creep Down the stairs to have a peek She thought that I was tucked up In my bedroom fast asleep Then, I saw Mommy tickle Santa Claus Underneath his beard so snowy white Oh, what a laugh it would have been If Daddy had only seen Mommy kissing Santa Claus last night Then I saw Mommy tickle Santa Claus Underneath his beard so snowy white Oh, what a laugh it would have been If Daddy had only seen Mommy kissing Santa Claus last night Oh, what a laugh it would have been If Daddy had only seen Mommy kissing Santa Claus last night ( I saw Mommy kissing Santa Claus)