A Fay-sexual is someone who doesn't have crushes on celebrities.
Fur Babies
The hidden bundles of dust and hair that live in the corners of your apartment that are later found clinging to your sock, coat, sweater or pant hem like a little baby who doesn't want to go to kindergarten.
Fitness Clique
Near-impenetrable groups of workout devotees, divided into crews by their preferred trendy, cult-like classes.
FOMO Spending
When fear of wasting time peer pressures you into shopping
Fast Forward Friday
An alternative to #TBT, wherein one depicts their awesome future self, photographs it, and posts on social media for all to see. Ideally on a Friday.