What is Ros Bif?
1.
A silly insult used by the
Frenchie: Tu es un ros-bif!
Limey: Qui-a-mangé toute les tourtes?
See
2.
A silly insult used by the Frogs to define the British, apparently because we eat too much roast beef.
(Note the lack of dashes)
Jacques: Tu es un ros bif!
Nigel: Qui a mangé toutes les tortes?
See