Panel 1: What does 'S' stand for?
Panel 2: For... sitter. Yeah, sitter.
Panel 3: Originally, I was gonna have initials for babysitter, but then I would have been going around wearing a big 'BS'.
Panel 4: You understand why I couldn't go with that.
Caption: The three kids I babysit were so confused when I laughed so hard I almost fell off the couch