Green’s Dictionary of Slang

jump up v.

also jump up on
[jump v.]

1. to criticize harshly.

[US]J.W. Carr ‘Words from Northwest Arkansas’ in DN III:i 84: jump up, v. To censure. ‘He got jumped up for that.’.

2. to steal a lorry and/or its contents.

[UK]J. Morton Lowspeak 84: Jump up – to steal from the back of parked lorries.

3. (US) to arrest.

[US]B. Jackson Thief’s Primer 149: The law enforcement there was nil – there just absolutely wasn’t any – so I had no chance of getting jumped up on.