A wheelbarrow is a cart with a single wheel in the front and two supporting legs and handles at the back. A wheelbarrow is something people push when they move it around. "Don't let people push you around" is a saying meaning do not let people intimidate or coerce you into doing something you do not want to do. The person is saying that people tell them that they are a wheelbarrow and a wheelbarrow gets pushed around.
Doctor , doctor , people tell me I ' m a wheelbarrow . - Don ' t let people push you around . Next .