1. The short form for the popular gun the "Schwerer Gustav". This weapon is a German railway gun which was in use in World war II, this gun was destroyed as the Germans did not want their enemy to acquire the weapon after the war.
Person 1: Have you seen Gustav, that gun is so THICC!
Person 2: IKR! I wish it wasn't destroyed, then we could've visited it in a museum!
Gustav is a common name among the LGBTQ community. They are known for having a huge ass, and all around a lot of feminine features. Most girls that switches their gender change their name to Gustav.
Person 1: "Oh, i just found out that i actually feel like a boy inside:"
Person 2: "What are you going to change your name to?"
Person 1: "GUSTAV!!"
a very gorgeous snake who likes to choke people on accident. accidentally sheds on blankets.
Wow that guy really does have a big nose, he’s probably called Gustav