Spontanic is a form of sexuality (not a sexuality itself). A spontanic person only has feelings of attraction by accident. They are only attracted to things they do not expect, such as surprisingly revealing clothes, untagged NSFW, or simply random thoughts. When they consciously try to feel attraction to someone or something, it does not come.
History & Flag
Spontanic was coined by Reddit user u/Renigee on r/lgballt. The spontanic flag was designed by Renigee. Red represents heat-of-the-moment, gray represents indifference, white represents all sexualities that this form can "modify", and yellow represents a sudden warming-up (this was made as a contrast to the laboric flag which has gradual stripes that fade to yellow.)
The term was inspired by u/adada1000's post on the same subreddit about a term they coined and designed the flag for themself: laboric. It is the opposite of spontanic. Laboric will not be added here until permission is given from its creator.