Definitions by Just me, the screen.

spacebuns 

That one bun haircut that some youtubers make tutorials on
OR
The way of talking about male genitals, originating from CupcakKe.

Girlfriend: Hey! I wanna go have the naughty naughty, just make sure you train your spacebuns!
You: Aight.

spacebuns by Just me, the screen. March 1, 2024