ASL: American Sign Language; the language of the Deaf in North America - officially recognized after 150 years! ASL is a language with its own content, grammar, and principles. It also is a completely visual language. American Sign Language includes  the lexicon and inflections, semantics, syntax (grammatical structures) and pragmatics including  conversational structure and rules of uses.    

PAH!: an ASL expression loosely translated to mean "Finally, we made it", "What a breakthrough!", "Victory!", or "It's about time!"
It uses the sign for "success" made in large, high, sweeping motion (using a lot of space beyond the normal signing space) while uttering "Pah!"
This expression/sign is credited to Fran Ripplinger, a senior citizen in California (US).

ASL-PAH.com/Happy Waving Little Hands™: Dedicated to assisting, educating, interpreting and developing the skills of the Deaf and their families, especially children and their parents. We specialize in ASL and Early Literacy Services.