conchatumare is incorrectly written and should be written as "Concha de tu madre" being its meaning: It is a vulgar abbreviation of " your mother concha " another equally vulgar expression used as an insult.
A vulgar and profane expression that is quite widespread in South America. Short for "your mother's shell".
conchetumare, it's like saying putamadre, just changing the first words.
It is the most vulgar and profane way of insulting another person a Venezuelan. It is not used in any other South American country; It is equivalent to when a Spanish says " the whore mother who bore you " or when a Colombian says " Bitch " or " malparido ".
Deformed Apheresis of the shell of your mother, insult which in Spain is not usually hear, except among Americans, especially when they play soccer. Here they say, as equivalent insult, your whore mother.