CHISTES PARA APRENDER INGLÉS/ JOKES TO LEARN ENGLISH

Aquí tenéis un chiste para aprender inglés; no lo vamos a traducir al español porque queremos que nos expliquéis por qué es divertido y lo pongáis en un comentario. Las palabras subrayadas son las más complicadas, y ponemos su significado a continuación:
One day, a teacher was attempting to teach the names of animals to a class of 5-year-olds. She held up a picture of a deer, and asked one boy, "Billy, what is this animal?". Little Billy looked at the picture with a disheartened look on his face and responded, "I'm sorry Mrs. Smith, I don't know.". The teacher was not one to give up easily, so she then asked Billy, "Well, Billy, what does your Mommy call your Daddy?" Little Billy's face suddenly brightened up, but then a confused look came over his face, as he asked, "Mrs. Smith, is that really a pig?"!
Attempting: trying
Disheartened: sad
Give up: stop trying, quit
Suddenly: quickly
Brightened up: looked happy
Confused: unable to understand
