Free haircut

Guy comes into a barbershop with a little boy. The guy sits down and gets the full treatment - haircut and straight razor shave. After he’s done, he motions for the boy to take his place in the chair, then turns to the barber and says, “Be right back, I have to pick up something at the drugstore.” The barber finishes the boy’s haircut and waits, but the guy doesn’t come back. He finally turns to the boy and says, “Did your dad forget about you?” The kid answers, “Oh, he’s not my dad. He just walked up to me on the street, said, ‘Come on, we’re gonna get free haircuts,’ and brought me in here