[orand]

Humans can only produce two different types of gametes (sperm or egg), and never both in the same body. And it’s never a “spectrum” with “speg” or “sperg” variants.

[rrrrrrrrrrrryan]

Many people are infertile and make neither.

Surely, if we're trying to group people by biological sex, we'd use chromosomes and ternary logic: male / female / intersex.