Camping Trip Surprise

Little Johnny went on a camping trip. All the tents were taken, so he shared with the teacher. So Little Johnny says: "Can I play with your bellybutton? My mom always lets me when we camp." So the teacher says: "Sure." 5 minutes later the teacher says: "Woah, woah, woah that's not my bellybutton!" Little Johnny says: "Woah, woah, woah, that's not my finger."