i have very odd speech patterns. i'm very articulate and verbose because i feel i can't ever word what i'm trying to say in a way that satisfies me. what satisfies me is often the direct opposite of what people will understand, but they rarely pay attention to what i say anyway.
i try to hold myself back for the sake of effective communication, but when i talk to myself or write to myself, i find it very fulfilling to use nonexistent idioms and expressions, to use existing idioms and expressions in a different sense, or to make derivatives of existing idioms and expressions that are so far removed from their source, they are barely recognizable. sometimes one or two of these made up sentences will escape me in casual conversation. it seems people find this humorous, or just let it slide as one of my many many eccentricities.
you'll find that people let a lot of social slip-ups happen with no scrutiny if you are charismatic enough.