About ASL

American Sign Language (ASL) is the 3rd most commonly used language in the United States. (HandSpeak)
For a person to become fully competent in any language, including ASL, exposure must begin as early as possible, preferably before school age. (National Institute On Deafness and Other Communication Disorders)
ASL can be used to tell jokes, ask riddles, express sarcasm, tell lies, create idioms, make poetry, etc. (Sign Genius).