Presexual is a placeholder term for when someone feels that they have not experienced enough attraction to know their orientation yet. It specifies that they are questioning and refers to lack of knowledge rather than a curiosity, transitioning, or learning of sexuality.
The romantic counterpart to presexual is preromantic.
History
The creator of the term and flag are both unknown, though both have existed since at least August 21, 2015.[1] The flag has no known meaning.