@ninja9578 Possibly you just invent things, that might sound fitting. Or you might be right with thinking quickly. I remember dreaming about talking to my friends in German and filling a gap with a Spanish word, which would describe a different thing, but sounding similar to the German word at first. After waking up I noticed it made absolutely no sense at all.

@MischiefManaged Maybe you pick up some words on the go and just add them up making random sentences, that might make no sense at all, but using words you know of that language.

Itīs interesting how the environment changes the way we think.