A Kluck Fuck that is extremely flat in the ass but fat in the sass. Typically eats 3 entrees for breakfast, lunch, and dinner. A Fat Aus can be seen in the wilderness but on rare occasions can be seen holding the same beer for three hours in the corner of your favorite local bar.
"Did you just get a three stack of pancakes with your huevos rancheros? You a mother fuggin Fat Aus."
by Gemma369 October 10, 2017
Get the Fat Aus mug.me: yo bro u just became a big fat austrailian man with big dih who just shat himself and became a nigerian
jake: wtf
bob: bob
jake: wtf
bob: bob
by Some random dude :D October 1, 2025
Get the big fat austrailian man with big dih who just shat himself and became a nigerian mug.