To leg it means to run or dash away. This phrase is most commonly used when escaping from something that would seemingly cause mischief or trouble to yourself.
"Oh no! Emma is coming! Leg it!"
To “leg it” is a commonly used British phrase to mean to quickly run away from something.
“I was caught fighting someone by the head so I legged it”
“If we see Jessica, just leg it”
The act of running away like a pussy.
We had to leg it from the shopkeeper when he realised the coins we gave him were covered in dog shit.
The British Way Of Saying “Run Quickly”
Matt:The Cops Are Here
James:LEG IT!
Run really fast with short notice usually away from something.
‘Leg it’
‘What does the mean?’
‘To run away from something’