Sometimes he will make up words and instist that they are words, sometimes he will make up a word and then tell me "that means _________ in Spanish"
We get this too, but the language is a made-up one related to DS5's imaginary world "that means ______ in gork language" or something like that. DS5 is also big into making up his own magic spells � la Harry Potter, so we get a lot of fun made-up words there (a favorite spell is buttafloorus).
We recently went to the speech therapist on referral from the school district. As DS demonstrated his spells and told her a bunch of stories about his made-up world, the speech therapist smiled and took notes. Turns out his speech is fine for his age, but his age appropriate missing "r" is made more troublesome by his extensive and unexpected vocabulary and his made-up language.