In cuban slang, it refers to a slap on the face.

synonym of cracker

comes from the spanish word meaning cookie

Cocaine/coke ; blow

Se usa cuando se le pone mucho entusiasmo a alguna actividad...

-¡vamos equipo, echenle galleta!
Mexican idiom which literally means “throw cookie” but you use it as “Come on” It’s used when you put a lot of enthusiasm to some activity ...

a fat fucker of a man who loves eating more than sex or being in the state of "existence" itself... it can be used for both males and females... but for specifics...you could try "miss galleta" or better "miss galleto". :D