Nos la suda
Si tienes cualquier duda nos la suda....
Soy Nay, me la suda
Para los que nos la suda todo......
Me la suda.......
I think it means, I don't care, like
If you have any doubts, well we don't care.....
But I don't get it because, sudar is to sweat, and I guess you could say "don't sweat the small stuff" etc.... but here there is no "no" you see? Hmm... maybe I have it wrong anyway.
Gracias.
5 Answers
It's a colloquial expression, but "ma la suda" means I don't give a damn, "nos la suda" = we don't give a damn. I guess some would call it "vulgar" Spanish.
Una imagen vale más que mil palabras.
Look at that face and you will understand without explanations 
As Jack-OBrien said, it's a vulgar expression.
Although that it's only used in Spain.
"Me la suda" is a very vulgar (if not rude) expression in Spain, and although people use it often, you don't want to say this in front of someone you don't know. The "sweating" part of the body can be found between your legs; that says everything.
¡Olvídenlo! Ya he descubierto por mí mismo lo que me preguntaba antes y, ya que sé, no deseo en absoluto que me lo expliquen ustedes. Entonces, he borrado mi primera respuesta aquí.
Well, the way you put it it's strange to me, there's an expression that well, some people use and it's:
Me suda, te suda, les suda, les sudó...etc.
And basically it means: Me preocupa, te preocupa, les preocupa, les preocupó...
But with an stronger sense, like concern or fear.
An example could be:
Me sudó, mi novia casi me encuentra con mi amante.
I got worried, my girlfriend almost caught me with my lover.
I am not sure if this helps you. 
