0 extremely fast:
You'll have to run like the clappers if you want to catch your train.
We speak also of going like the clappers; this too is a nautical expression.
So they were all very disappointed, as were my staff, who had worked like the clappers to organise the debate.
NYA ORD
European
May 10, 2021
DAGENS ORD
Shimmer
like the clappers