2. Neptune is love rat or love rat, who has a lot of ambiguous relationships and takes casting a wide net and fishing more as their love thoughts. The process of pick up hot chicks or coquetry is called fish farming. Neptune originally meant Poseidon, the sea god, who was in charge of the sea. On the Internet, Neptune described the spare tire as a fish and became synonymous with love rat. Popular words related to it include central air conditioning, spare tire, licking dogs and so on.