Sir: Your expression is very "VAYGOO"
Boy: It's not "vaygoo" Sir. It's "vague"!
Sir: Never Mind! It's just a slip of my "Tangoo"
Boy: Oh No, Sir! It's not "tangoo". It's "Tongue"!
Sir: Come On, Boy! Don't "AARGH" with me.
Boy: (To Himself/Wondering): Did "he" remotely mean "ARGUE"?