la potra
Short for potranca (Spanish) which is a horse that is hard to tame, wild. Thus it refers to a woman with a strong character who doesn't let any man control her, can't be "tamed" (does what she wants).
Uno de estos dias va ser mia la potra, va caer.
la potra
a girl that lets no man put her down, a harrd bitch
i heard nikki is such a la potra she rejects every guy in the skool