To chug a small coffee at 3:30pm to fend off the afternoon crash. This will give you all caffeine at once, so it wears off at once, and you can still get to sleep at night.
The Boss: "WILSON! are you falling asleep at your desk again?"
Snotty people who think they know everything about coffee. Typically associated with a hipster who frequents local overpriced coffee shops but doesn't actually know how to make coffee.
Carol: "Hey Sarah, did you hear about the new coffee shop?"
Sarah: " Yeah, Karen said she just went there. She ordered an Ethiopian flat white with oat milk and vanilla syrup."
Carol: OMG, Karen is such a snoffee!"