have a good mind
if you say you have a good mind to do something, especially to punish someone, you mean that you would like to do it, and might do it, although you probably will not

[TahlilGaran] Dictionary of Contemporary English ▲

have a good mind
have a good mind (to do something)
[informal]
if you say you have a good mind to do something, especially to punish someone, you mean that you would like to do it, and might do it, although you probably will not.
I have a good mind to report you to the headmaster for playing truant.

[TahlilGaran] English Idioms Dictionary ▲