Meaning of the word "like greased lightning" in English

What does "like greased lightning" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

like greased lightning

US /laɪk ɡriːst ˈlaɪt.nɪŋ/
UK /laɪk ɡriːst ˈlaɪt.nɪŋ/
"like greased lightning" picture

Idiom

very quickly or rapidly

Example:
When the bell rang, the children ran out of the school like greased lightning.
He finished his homework like greased lightning so he could go out and play.