A lagoon animal is an unattractive girl who is notably aggressive and hard to avoid. Lagoon animals are known to prey on drunk guys who are willing to make a huge mistake. Lagoon animals travel in packs and reside together in lagoons. Lagoons should be avoided at all costs and if, for some reason, you need to venture into a murky, stinky lagoon you need at least one bro to back you up.
Bro 1: Last night I had some loaded landsharks and tequilla and I ended up at the lagoon. The lagoon animal took advantage of me.