1.) used to describe an object or person that is so good/fine you could copulate with it/them.
2.) to say something is so good it could take the place of copulation (without increasing the population, but better than masturbation, in our nation... ation)
1.) Beyonce's body might be bootylicious, but Vida Guerra's body is copulicious.
2.) After smoking a blunt, most fast food can be found to be copulicious (or brownies, or cookies, or any food really).