Is it normal my sister said i have a nice butt?

incest is best.. put your family to the test... (j/k)

No reason to get weird about this, just a complement, enjoy it! LOL

If you post this, you might be a redneck.

my sister was fascinated by my body

This is so heavily dependent on context that it is really hard to say.

If she just said that to you on some occasion, it's probably no big deal. Some families that's totally taboo but some it's perfectly normal, especially when you get older.

If, on the other hand, she saw you getting out of the shower, then said it and grabbed your uncovered buttocks, then you have a problem.

I'm girl and my brother told me the same thing...

i think thats weird. i mean not to worry you or anything but i would NEVER say anything like that. It makes me cringe... Hi, i have this paranoid OCD thing.

Disagreed with shackle.

@Laurent that's a great metaphor. Most people nowadays are so sexual they associate everything to, well, sex. Kinda sad, really.