Milkshakegender is a Xenogender defined as a gender that is connected to the feelings of the softness and coldness in milkshakes.
You could also be related or connected to milkshakes singularly or be related to their flavours.
You may also be related to the aesthetic of milkshakes; foamy, soft, sweet, etc; You can be connected to multiple flavours or just one.
History
Milkshakegender was first coined by Twitter user MOVED on the 17th August 2020.
The flags were made and posted the same day.
Sources
https://mobile.twitter.com/daIIassmuth/status/1298932124234416128
https://picsart.com/hashtag/milkshakegender/most-edited-stickers