I have never heard this before, I think most native speakers would think it was odd. However, in the context of the sentence you provided, it would be roughly understood.
I would avoid using it in text though. If you want to use this phrase, it should be accompanied by a tone that indicates its meaning.
Edit
Following from FeliniusRex's comment, I went around and asked several other native English-speakers.
2 said they don't understand what it means.
4 said they hadn't heard it before but could guess what it meant. (One person said it's "very very odd")
1 said they had heard it before, but it "sounds funny".
1 said it was not odd to them.
I think it's totally fair to call this phrase odd.