To lose one's mind/marbles. Refers to when an individual forgets obvious things or makes easy mistakes, similarly to the symptoms of going senile.
'You're losing on yourself because you put your shoes in the fridge!'

Amy is losing on herself because she confused a person with a cat.
by Giant Mushrooms June 1, 2011
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To lose one's mind/marbles. Refers to when an individual forgets obvious things or makes easy mistakes, similarly to the symptoms of going senile.

As defined by Peter Smith.
'You're losing on yourself because you put your shoes in the fridge!'

Amy is losing on herself because she confused a person with a cat.
by Giant Mushrooms July 3, 2011
Get the Losing On Yourself mug.