have your head screwed on

have (one's) head screwed on (right)

To have sound judgment. I'm not surprised that Melissa invests most of her paycheck instead of spending it frivolously because she's always had her head screwed on right.
See also: have, head, on, screw
Farlex Dictionary of Idioms.

have your head screwed on

INFORMAL
If someone has their head screwed on, they are sensible and realistic. Good girl! I always knew you had your head screwed on properly. The only one with her head screwed on was granny.
See also: have, head, on, screw
Collins COBUILD Idioms Dictionary, 3rd ed.

have your head screwed on (the right way)

have common sense. informal
See also: have, head, on, screw
Farlex Partner Idioms Dictionary

have your ˈhead screwed on (the right way)

(informal) be sensible: You can certainly trust Ann with your money. She’s got her head screwed on the right way. OPPOSITE: have a screw loose
See also: have, head, on, screw
Farlex Partner Idioms Dictionary
See also:
  • have (one's) head screwed on (right)
  • have one's head screwed on right
  • big ticket
  • big-ticket
  • the roof caves in
  • the roof falls in
  • keep from
  • keep from (doing something)
  • keep from doing
  • spend money like a drunken sailor