The picture above shows how hungry the teachers are after a long day of teaching.
This picture shows that the teacher is very thirsty after talking for the whole day.
This picture shows how desperate Gavin is for a drink as u can see his tongue is licking the vending machine hoping for a drop of water.
This picture shows gavin looking for an important item. As u can see he is even going to the extent of reaching into the rubbish bin to check if it is there