Boyspike is a genderfluid microlabel that describes someone who is most commonly a masculine gender, but randomly and suddenly spikes to a feminine gender before returning to their original gender just as suddenly.
The feminine counterpart is girlspike.
Boyspike was coined by FANDOM user Tavroscore on August 8th, 2021. This page is the original source for the term.
The boyspike flag was made by the same user on the same day. The background colors are stereotypical boy colors - blue and teal (although this is not saying that those who identify as masculine are required to like or even relate to these colors). The pink line and diamond in the middle represent the sudden surge of femininity in a normally masculine identity.