One who looks as if they have had severe sexual trauma to their facialregion
When conceived the doctor could not but help himself to the sexual pleasures that innocent Hugo's face presented unto him. From that day forth he was a rapeface.
Ever kissed a rake? Of corse not, you'd look stupid. Much the same can be said of a rake face, one who is so ugly/stupid/other that to be seen kissing it, would be like seen snifing your mums undies.