spanner in the works
a problem that comes totally out of the blue and ruins a set plan.
"OI is johnny coming round to the pub?"
"Nah his girlfriend has a cold so hes has to stay home and look after her"
"Thats a spanner in the works isnt it"
"Nah his girlfriend has a cold so hes has to stay home and look after her"
"Thats a spanner in the works isnt it"
throw a spanner in the works
Have a huge problem that halts progress.
Thats gonna throw a spanner in the works.