Early 20's (estimate)
Miss Tammy is Stewie's new preschool teacher.
Starting with "This Little Piggy", Stewie graduated from the green room in his Preschool and moved on to the purple room. There, his new teacher was Miss Tammy. Stewie was surprised, when he and Brian went to woodstock and saw Miss Tammy there, acting like a drunken, slutty party girl, flashing her tits to everyone.