Keysmashgender has two different meanings.
The first meaning is "when your gender is fcashagdfjhgheojanbsvgcagdahskjsnxbgdaehsanABXSVGA".
The second meaning, which is similar but goes into more depth, is a xenogender that one can only describe through a keyboard smash, such as afkjbdfvbkxfd. It feels chaotic, confusing, and unable to be described by normal words. One's gender could be connected to the aesthetic of a keyboard smash, or one may want to incorporate keyboard smashes into their gender to help understand it. This gender can have any alignment, such as masculine, feminine, neutral or androgynous.
History
Keysmashgender was first coined on the 10th of April, 2018, by Tumblr user validmogai.[1]
The term was independently coined by FANDOM user ThatAnnoyingDemigirl (now ChaoticAroace) on the 17th of August, 2021, who wasn't aware the term already existed. The two definitions are similar, but the second definition is more detailed. The second definition was coined on this page and has no external sources.
Etymology
Keysmash- is short for keyboard smash.
Flag
The flags for the second definition were created by FANDOM user Space365 on the 3rd of September 2021. For the first flag, red and orange colors mean the chaos of gender, white is the classic keyboard color, and grey shows how confusing it can be to describe this gender. The image is a keyboard with two hands, the keyboard is white and the hands are grey. This represents the confusion of describing it and the uniqueness of the keyboard smash. The alternate flag is a dark edition and has the same meaning, except the black. Black shows being unable to describe it and the void of normal words. It can also mean that some other keyboards are black by default, like the other classic color for keyboards.
The flag created for the first coining in 2018 was created by Tumblr user validmogai on the 10th of April, 2018. There is no confirmed meaning for the flag.