(I've been) keeping out of trouble
A humorous response to a question about one's wellbeing or activities. A: "What have you been up to?" B: "Oh, just keeping out of trouble."
(I've) been keeping out of trouble.
and (I've been) keeping out of trouble.Fig. a standard response to a greeting inquiry that asks what one has been doing. John: What have you been doing, Fred? Fred: Been keeping out of trouble. John: Yeah. Me too. Mary: How are things, Tom? Tom: Oh, I've been keeping out of trouble.