What does darle algo a alguien mean?
Expression
to have a fit — from stress or shock
That unnamed algo is a fit, a heart attack, a funny turn: the expression deliberately does not specify. It is nearly always hyperbole — me va a dar algo — and covers fright, anger and impatience. Said seriously it would be alarming; as hyperbole, it is pure domestic theatre.
No me des estos sustos, que me va a dar algo.
