It could have derived from 2 things:
La concha de tu madre! = Your mothers cunt!
Concha es tu madre! = Your mother is a cunt!
Either way is a pretty good insult!
Type your email address below to get our free Urban Word of the Day every morning!
Emails are sent from firstname.lastname@example.org. We'll never spam you.
Log in with Facebook to save your favorite definitions
and share them with friends.