half a bubble off plumb
Strange; silly; crazy. Referring to the bubble inside a level. A: "She's a sweet old lady, but yeah, she's definitely half a bubble off plumb." B: "OK, yeah, I was sort of startled when she started talking to her rosebush."
half a bubble off plumb
Fig. giddy; crazy. She is acting about half a bubble off plumb. What is wrong with her? Tom is just half a bubble off plumb, but he is all heart.
half a bubble off plumb
phr. giddy; crazy. Tom is just half a bubble off plumb, but he is all heart.