As the best food ever, beef
means a nice
thing, activity, and so forth...
The adjective form is a synonym to nice
NB: In French, the term beef
is the adjective and the noun.
That ska band, that's the beef! (so that's a nice music band)
It was such a beefy night!
Ce groupe de musique ska, c'est de la beef.
Trop de la beef cette soirée.