Members of fandom who consider that their professed love of something entitles them to claim privilege above and beyond anyone else.
"I can't believe all these fantitled people whining that they should get a guaranteed pass to the Doctor Who convention just because they liked it before it was cool!"
When, after releasing a cloud of farticles, you suddenly get up from your chair and walk across the room or office, trailing a cloud of farticulate matter behind you and contaminating the vicinity.
Dude! I heard that! Take your farticle accelerator somewhere else! (waveshands to dissipate farticle cloud)