Yah

An interjection used in mainly suburban Illinois schools after someone has been seen observing a bountiful booty. It is often accompanied with pointing at a person with all five fingers held together, as is also done during intense roast sessions. Though, it's overuse has seen it become a term used ironically whenever someone looks at virtually anything. It is often accompanied with tag-on phrases, multi-lingual adaptations, and humorous "signature moves".

Non-Ironic:
Person: *stares at phat ass*
Friend: "I'm fucking done. Yah!"

Ironic:
Person: *looks at ceiling*
Friend: Goddamn savage, yah!

Spanish Adaptation:
Person: *looks at phat ass*
Friend: Oh my god, ja animal!

Signature Move, the "Yahmaca":
Person: *stares at phat ass*
Friend: *mimes putting on yamaca, lighting menora, and puts hands together to pray. Keeping prayer hands together, they point them at the other person* "Yah!"