A co-workers two year old child has learnt to say the F-Word. He doesn't know what it means. He knows that it gets a reaction. He says it over and over like a parrot.

"Fuck Off. Fuck Off. Fuck Off. Fuck Off."

The last time they were on a jet, the child swore the whole way. She tried to muffle the sound by placing her hand over his mouth, but he just kept saying it louder and more distinctly.