do a disappearing act
idiomPart ofdisappear
do a disappearing act — idiom
1. to leave or become impossible to find, especially at a time when people need you
1.idiom
Definition
to leave or become impossible to find, especially at a time when people need you or expect you to be available
Example
Whenever it is time to do the dishes, my roommate does a disappearing act.
The babysitter did a disappearing act right before the parents came home.