it's my life

One day a 5th grade class was taking a field trip but the weather was extremely bad and the trip was to be delayed and they had to stay in a hotel for the night. So Little Johnny was sleeping in the same room as his teacher.
In the middle of the night the teacher woke up and was frightened by the sight of Alex standing right over her. He asked if he could sleep with her cause he couldn't sleep.
She said okay, then Johnny asked to lay a little closer and she said okay. Then he asked if he could put his finger in her belly button and she said "NO"
"But my mommy lets me do it when I can't sleep and it helps."
So the teacher says, "Okay fine, do whatever your mom lets you do."
A few minutes later the teacher says "OH.that's not my bellybutton."And Johnny says, "that's not my finger."