Carrying coals to Newcastle

carry/take coals to Newcastle (UK)

to supply something to a place or person that already has a lot of that particular thing:

Exporting pine to Scandinavia seems like carrying coals to Newcastle.

Cambridge Dictionary
A trainload of coal on the high level bridge in Newcastle

A trainload of coal on the high level bridge in Newcastle

Blocking the Road with an Endless Pipe Prank

29 apr. 2018

We stopped the road completely with a never-ending pipe. Drivers were not too happy.