don't I know it

don't I know it

I know that very well or am fully aware of it (due to my particular circumstances). A: "Wow, I guess you guys still have a lot to get done before the baby comes." B: "Yeah, don't I know it."
See also: know

Don’t I know it!

exclam. That is really true! Late? Don’t I know it. I’m yawning like hot cakes.
See also: know