Like the clappers
Definition 1 of 1
Pro Tip 1/3British Origin
Originated in the UK, so it's more familiar and natural-sounding to British English speakers. 
He started typing like the clappers once he realized the deadline was close.
Pro Tip 2/3Informal Use
It's casual and usually used among friends or in laid-back settings, not in formal situations. 
We need to pack like the clappers if we want to catch our flight on time.
Pro Tip 3/3High Energy
Conveys a sense of urgency or intense effort, often used in lively or humorous stories. 
The kids were cleaning the house like the clappers once they heard we'd get ice cream.