It depends on what you mean to say.
If you are casually saying that your husband is currently being a little odd, the translation is: "Mi esposo está loco."
If you mean to say that your husband is clinically insane and should be hospitalized (if not already), the translation is: "Mi esposo es loco."
Bésame el trasero that's how u say you are crazy about me
loco
You can say "Estoy loco(a)".
You say, "tortuga loca."
¿Eres loco?
Estamos locos
Me vuelves loco/a.
No estoy loco
no demente, desquisiado, son others ways to say crazy.
You could say "Sombrero loco".
There are two common ways to say husband in spanish, either esposo or marido.
"piernas locas"