I thinks the desired answer is:
Ponytail
I could be brown or may be black, but, I ain't no snake.
Brown or black colour of hairs & the snake is a refarance to shape of ponytails.
I may bounce, though, not the ball.
Ponytails bounce with the movement of head.
Always tied, but, not the cuffs.
Ponytails are nothing but bunch of hairs tied together.
Not even the boots, but quite often tall.
Ponytails are quite long, some even tied in such a way that they looks like a shaft standing up before hairs falling down.
Call me a swine, I really don't care.
Some people call ponytails, pigtails while both are diffarant.
Both XX and XY may hold my possession.
Though ponytails are common in girls, even some mens also tie their hairs for style. (XX and XY are referance to chromosomes which define gender of human baby.)
I will lie back there, quietly as always.
Will cheer for the fact that I have my own equation!
This seems like a refarance to Ponytails Equation
I have my home abaft the brain.
Oh I miss you, my Bruce and my Dwayne!
Hairs reside above brain on scalp. Last line is a referance to fact that both Bruce Willies and Dwayne Johnson dont have hairs on their heads!
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My first attempt was:
Hairs
I could be brown or may be black, but, I ain't no snake.
Brown or black colour of hairs
I may bounce, though, not the ball.
Hair bounces when you move, run, dance etc.
Always tied, but, not the cuffs.
Tied at root to hair, or even in form of ponytails.
Not even the boots, but quite often tall.
Hais can grow quite lengthy.
Call me a swine, I really don't care.
Dont know exaclty but this might be a referance to unkept hair or a filthy person
Both XX and XY may hold my possession.
Both genders posses hairs. XX and XY are referance to chromosomes which define gender of human baby.
I will lie back there, quietly as always.
Will cheer for the fact that I have my own equation!
Little doibtful about this. Hairs are considered as style statement and attractive. Though they just sit on head people still take care of hairs and find them attractive.
I have my home abaft the brain.
Oh I miss you, my Bruce and my Dwayne!
Hairs reside above brain on scalp. Last line is a referance to fact that both Bruce Willies and Dwayne Johnson dont have hairs on their heads!