F*A*B
FAB was from a show called Thunderbirds. It meant 'Loud and Clear' or 'Got it.' It came from a cool guy named Gerry Anderson who made the show and used cool words like 'SIG' which meant 'Spectrum Is Green.' It was basically just a fancy way of saying 'I hear you.'
'Fab!' I said, and I knew I got the message.
He said 'SIG' and I knew the mission was on.
She said 'Fab!' and I knew she heard me.