Following an argument over a missing tip, Zachary Nicholus Walton, 36, intentionally drove his car into a customer to "intimidate" them, causing injury.

The small hole on takeaway coffee cup lids acts as an "air valve," balancing pressure, ensuring a stable flow, and preventing hot drinks from spilling.

While tipping may be a given in American culture, in many parts of Europe, it can sometimes be seen as an insensitive gesture.