What does AYF stand for?

Airboat Headquarters Inc., Opa Locka, FL - Manufacturer code for watercraft hull identification number (USCG)

All Your Fault - Chat lingo

American Youth Foundation (EA)

Antiyeast Factor - Medicine

Arab Youth Federation (SAUO)

Are You Finished (XSAL)

Armenian Youth Federation of America - Youth Organization of the ARF - Armenian Revolutionary Federation of America (EA)

Armenian Youth Foundation of America (SAUO)

Asian Yachting Federation (SAUO)

Australian Yachting Federation (AD)

Anti-Yeast Factor (AD)