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Big brain time 

Plankton the evil genius giant brain.
Friend:Plankton is the best character!
Other friend: yeah, he’s the definition of Big brain time

Big Brain Time 

Sucking the male genital in order to give one pleasure.

Giving head for male pleasure.
Big Brain Time by Jjjbblll June 9, 2021

Big brain time 

Plankton the evil genius giant brain
Friend: Wow, Plankton is the best character!
Friend 2: I know right? He’s the definition of Big brain Time
More from Urban Dictionary
The number of years you are still sexually active
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
sexspan by Dr Kat April 21, 2022
Word of the Day on October 28, 2026
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.
You didn't get any napkins with your takeout pork fried rice? Womp womp.
womp by 175623226 November 3, 2011
Word of the Day on October 27, 2026
When your wife’s boyfriend let you sleep past 8pm 😎😎
Wife’s boyfriend: You have 5 more minutes
Me: Poggers!
Poggers by Just_Charles April 14, 2020
Word of the Day on October 26, 2026
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