Is it so wrong for me to say that my father is narrowminded?

Only if he's not. My sister used to/still does think my dad is ignorant and stupid, but I think that's just her defense against his opinions that she doesn't like or agree with. It seems childish to me, but it may be different in your case.

No. But it won't change him or your situation. And those you say it to may give you a hard time.

not if he can see through a keyhole with both eyes...

It's normal to be critical of your parents.

Does he have a pointy head?

Not in the least - although you may not want to say it to his face, in that case :)

Even if you're right, it might be seen as disrespectful, that was popular in the 1950's when repression was rife and gave birth to the beatniks...:)

no..u got the right to say what u feel :)

No, but it's wrong to be negative.

nope not at all

No it's not...

Nope