Concha / Chucha / Chocha
Concha (lit.: "mollusk shell" or "inner ear") is an offensive word for a woman's vulva or vagina (i.e. something akin to English cunt) in Argentina, Chile, Paraguay, Peru, Uruguay and Mexico. In the rest of Latin America and Spain however, the word is only used with its literal meaning. In such regions, it is commonly heard in the phrase ¡(La) concha (de) tu madre! ("Go fuck your mother"), which may be used as an expression of surprise or grief, or as a highly disrespectful insult. The contracted term conchatumadre/conchetumadre is very common and very offensive in Chile as well.
In Mexico concha, which is used in its literal meaning, is also a type of sweet bread, round conch-shaped and covered in sugar, as well as having the aforementioned meaning and is offensive when used in said context. In Spain and Mexico, "Concha" is a common name for females (corruption of Concepción). Also in Puerto Rico there is a popular hotel called La Concha Resort (The Seashell). Key West, Florida also has a famous hotel named La Concha.
Chucha/¡Chuchamadre! and ¡Chucha de tu madre! are Panamanian, Chilean, Ecuadorian, Peruvian or southern Colombian equivalents. Random examples and expressions: Vení, oleme la chucha ("Come and sniff my pussy"), ¡Ándate a la chucha! (roughly "Fuck off").
Chocha (or chocho) employed term for "pussy" predominantly in Cuba, Puerto Rico, Colombia, Spain, Mexico, Venezuela, and Dominican Republic. In the Spanish province of Albacete is also used choto (var. chotera, chotaco) in the same sense. The word is a homonym as it's also synonymous of "senile" when used as "He/she is chocho/chocha".
In Venezuela, chocha is also a type of round seed or a particular type of bird
The name of the Latin American restaurant Chimi-Changa originated as a minced oath of chocha.
Read more about this topic: Spanish Profanity, References To The Female Genitalia