Evolutionarily speaking, it is to attract potential mates. A large buttocks indicates fertility and that the female will be able to carry and bear young. This is why women developed wider hips and larger buttocks than men.
Big girl with big buttocks.
Well obviously how ever big there butt is.
You place and rest your buttocks close to her
Physically, yes, but it is not the wisest or healthiest thing to do.
It is called swatting. It can be a sign of flirtation.
Nothing! If you want to have a happy life, focus on the girl's personality, not her body.
tone, firm, rounded, but not too big
a tramp stamp
To get big buttocks you have to eat healthy food and take exercises also have to massage them alternate.
I'm a greek girl and i don't have a hairy bum.
Excercise, my friend. Go and find a good gym or if you've got the money a good personal trainer. That should reduce the size of the buttocks a alot. Also consider if her buttocks is either mainly muscle or fat, because just because she has a big buttocks does not mean that she is fat, as she could have large muscles in the buttocks to comphensate for large breasts or other work.
For some people, the pubic hair can grow into the area between buttocks.