It depends on what you are trying to say.
If you mean that the person is crazy or insane on one issue, but usually a normal person, it would be proper to say, "estás loco".
If you mean that the person is psychotic or should be institutionalized, it would be proper to say, "eres loco".
you say crazy in spanish is loco do you get me
Me estoy volviendo loco (or "loca" if feminine).
OR
Me vuelvo loco.
OR
Estoy volviendome loco.
Ustedes están locos if you are talking to all boys or boys and girls
Ustedes están locas if you are talking to all girls.
El loco
esta loco
Loco.
loco
Bésame el trasero that's how u say you are crazy about me
You can say "Estoy loco(a)".
¿Eres loco?
Me vuelves loco/a.
No estoy loco
Estamos locos
You say, "tortuga loca."
You could say "Sombrero loco".
no demente, desquisiado, son others ways to say crazy.
loco por ella
poeta loco