As someone who's both Australian and a fan of Bluey, I can easily confirm that there are tons of slangs that are mentioned by the main Heeler family members or characters outside of the Heeler family.
Since "her" debut episode The Big One, I thought she was a male due to her deep male-sounding voice. But in the next episode, her namesake episode, the other numberblocks refer to her using the pronoun "she". I just want to know if I'm the only one who was confused by this.
BTW, it's the episode where Bluey causes Bingo's gnome (husband as she calls it) to fall off the shopping cart and break, leading to Chilli scolding Bluey.
When a brand new numberblock called 19 notices 18's ability to make a variety of rectangles, she's awed by it and it intrigues her to try and mimic him. Feeling a sense of determination, the starts off by attempting to make a rectangle two blocks wide, only to be hit by reality with the fact that she's got one block missing. She then attempts to make another rectangle three blocks wide, but fails yet again because she's got one block extra. After several more persistent, but unsuccessful attempts, she comes to the realization that she has nothing to be a super rectangle like 18 (apart from 1 × 19 and vice versa which are her only two factors) and gives up trying which causes her to feel distraught. However, her disappointment is short-lived when she discovers her own true talent which is the unique ability to transform herself into a wide variety of crazy shapes ranging from everyday objects to thingamabobs, helping her to realize the fascinating value of being a one-off and puts it to good use!
When a brand new numberblock called 19 notices 18's ability to make a variety of rectangles, she's amazed by it and intrigued to try and be like him, only to be hit by reality with the fact that she's a prime number and therefore, can't make a shape without having an extra block protruding or a missing corner at the top. After several more persistent, but failed attempts, 19 comes to the realization that she doesn't have as many factors as the super rectangles (apart from 1 × 19 and vice versa which are technically rectangles but don't follow the show's logic of super rectangles which should have many factors such as 12, 18, and so on). This causes her to feel disappointed in herself until she quickly discovers her own true talent which is the unique ability to shape shift into lots of things instead of rectangles, meaning that she can still stand out, just in her own special way.