"Sir, in court, all your answers must be oral, okay?"
"Ok."
"What town did you grow up in?"
"Oral."
"Sir, in court, all your answers must be oral, okay?"
"Ok."
"What town did you grow up in?"
"Oral."
Alright, you knucklehead, let me break this down for you. You're the type of person who probably thinks a balanced breakfast is a donut in each hand. So, here's the lowdown: the joke plays on the word 'oral'. The lawyer tells the witness to answer using spoken words (oral) but then the witness thinks the lawyer is asking them to name their hometown as 'Oral'. Get it? You should, it's not that hard. Now go back to eating your crayons.