Wake up, lazy man.
Despertas, tu peligroso! Is that right?
4 Respuestas
Yes that's fine. I'd say Llavantate, floja!, which is the same thing, just a different way to say it. 
I tend to have a bit more sabor, a bit more color, but what you said is the same exact thing. Wait long enough, and you will have hundreds of ways to say it.
Despierta,¡ vaguetas!
Peligroso: dangerous
Flojo also means lazy. theres many ways to say lazy in spanish.
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