It will rain shortly, expect rain in the next 20 minutes or so.
Q. Shall we have a picnic Ginger?
A. No Sedgewick, it's black over bills mothers house.
by John Stevenson June 10, 2004
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A phrase used when you can see dark clouds in the distance, esp. in summer.

Used in North West England, and possibly other places as well.
"Nice clear sky, isn't it?"

"It's a bit black over Bill's mother's though."
by Pak the Destroyer January 08, 2010
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