There are some words, kids got wrong somehow, when they were little. I still remember some of those words, but we aren't really using them.
One was my older son calling the garbage bin 'bank' - this must have been due to us once leaving to bank to pay the bills and took the garbage out at the same time. So when we told our son, we are going to the bank, he of course connected the word with the bin.
He also learned to speak so fast, he had to make up his own verbs for expressing doing certain things based on how they sounded, because he hadn't been told the word yet. But these words I can't really translate. They were pretty clever though and made me wonder, why aren't they already in the dictionary.