mess with
phrasal verbPart ofmess
mess with — phrasal verb
1. to interfere with something or someone, usually causing trouble or irritation.
1.phrasal verb
Definition
to interfere with something or someone, usually causing trouble or irritation.
Example
Someone has been messing with the thermostat and now the office is freezing.
The old farmer warned the children not to mess with the bull in the back field.