Someone of sheer idiocracy misplacing their keys inside their hoodie. They generally have a stench of angry mussels that follow them.
Losing keys in your pocket
It is like the term "losing my mind" accept it physical. Like being clumsy or messing stuff up.
I keep messing stuff up I'm losing my face
When you are so discombobulated by not having something your brain can comprehend anything.
Note can also be used with other senses and body parts.
Lost the smell in my eyes.
Can’t taste anything with my nose.
And so on.
I’ve not had a Coke for a week I’m losing sight of my ears.
I’ve not had sex in a month I’m losing sight out of my ears.