Language and Inference

Utterances are inherently ambiguous.
Normal people automatically integrate multiple sources of information, and apply background knowledge, to spontaneously infer unstated meaning.
Usually the inferred meaning is intended and true. Thus, normal cognition is usually highly efficacious.
When the inferred meaning is not intended, it can be humorous, or it can cause fights.
When the inferred meaning is intended but false, then it's probably an advertisement or political rhetoric.