3m open purse
Definition
A term typically used in online marketplaces referring to a handbag or purse that is 3 meters long or featured in a listing where dimensions or state are ambiguous; often used jokingly to describe an unrealistically large or nonexistent accessory.
A satirical or slang reference to an object that is supposedly 'open' to negotiation or features specific branding/sizing codes like '3m'.
Examples
I searched for a standard clutch, but apparently, the result was a 3m open purse that would require its own zip code to store.
When she said she wanted a bag for her errands, I did not expect a 3m open purse capable of fitting her entire grocery haul and a small sedan.
The seller listed it as a 3m open purse, which I assume is either a measurement error or the latest trend for people who need to carry their living room with them.