would lose one's head if it wasn't attached

Perpetually misplacing things

A humorous way of calling someone chronically forgetful or scatterbrained.

The exaggeration suggests they misplace things so often that even their own head would go missing if it weren't physically fixed to their body: She'd lose her head if it wasn't attached—third time this week she's lost her keys.

Related

obliviousness · brain fog · distraction · preoccupation · space cadet · vagueness · inattentiveness · fumbling · all thumbs · clumsiness · heedlessness · confusion · hot mess · tardiness · running late · frustration · embarrassment · ditzy

Opposites
mental organization and attentiveness

would lose one's head if it wasn't attachedsharp as a tack

Extremely intelligent and alert

on the ball · meticulous · detail-oriented · sharp · attentive

Family

would, lose, one, head, heads, headed, heading, headless, header

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Everyday, not technical · Rated G