mixing one's marbles: someone confusing people/things, unintential.

As opposed to losing marbles which can mean loosing grip of a situation or things, usually uttered in a frustrated manner, "I am losing my marbles".
You are mixing your marbles, you should have sent the package to me, not to Keith.

There is no mixing marbles.
by mixed_marble April 13, 2011
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Urging someone to speak, sing, or write so that they can be heard or understood more clearly
You need to get the marbles out of your mouth — I could barely hear that last verse.
by Lazarus Online December 10, 2022
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An old boxer that thinks he still has it
Hey

Look at that guy shadow boxing

Bless him he's definitely a john marbles
by J.j.c.c February 23, 2021
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the eldest of the Jenna Marbles pack who has no teeth, can't sit on hardwood floors, forgets where he is, and just wants to love jenna.
Mr. Marbles is literally the cutest
by dancing_t October 30, 2020
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