a) the female genitalia, especially the vulva;
b) an extremely unpleasant or objectionable person, especially a woman, rarely a man;
c) an unpleasant or difficult experience or incident;
d) a woman, women, or bottom as a source of sex.
b) Ty piča! - You bitch!
c) Do piče/piči! Dopiče/Dopiči! - Fuck!
d) Ty piča! - You bitch.
Pica: if one person does it it's sick but if thousands do it it's an affirming cultural experience