South american insult. Concha means
vagina in Argentina, Puerto Rico, Chile and sometimes
in other Latin countries. Concha is also a sea shell but the shells are usually refered to as conchitas (little sea shells) to avoid saying cunt. While, concha-tu-madre
is an insult, latin women do not always
find the use of the word concha as a body part to be as offensive as english
speaking women find cunt to be.