Birthday

It was the birthday of the teachers at school. She was really pleased when one of the kids gave her a present. She held up the box and knowing that the kids parents had an electrical retail shop said " its a dvd player" the kid was impressed.
A few minutes later a second kid arrived with a present, the teacher picked up the box and knowing that the kids parents had a paper clip factory said " its a box of paper clips".
Finally a third kid arrived with a box. The teacher looked at the box and saw a dribble of fluid coming out. The teacher picked up the box and poured the fluid into a cup and drank it, knowing that the kids parents had a wine shop. " its a box of wine.....lovely" the kid looked at her with surprise and said " we hope you like your new puppy"