A day when you rest from school, and potentially become smooth-brained, also known as the day of idiots.
Person 1: Hey, what’s Obama’s last name?
Person 2: -_- How smooth brained can you get on Smol Brain Friday? Obama is the last name.
Person 2: -_- How smooth brained can you get on Smol Brain Friday? Obama is the last name.
by IsolatedWords January 16, 2021
When a particularly mentally exhausting week impacts one's ability to think well, especially at work, on a Friday.
by Master Buck February 07, 2025
by Corporate_girly September 08, 2023