[astrodust]

Or vegetarian. Or pet owners. Or gamers.

[niccaluim]

That reminds me of a joke I read the other day:

Bystander: "Oh my god, this man is dying! Is anyone here a doctor!?" Vegan: "I'm a vegan"

[mazeway]

Or hackers.

[TeMPOraL]

The term "hacker", despite its current dillution with bastardizations like "growth hacker" still holds its caveat - you don't get to call yourself a hacker. It's a term others may apply to you.