An annual national & bank holiday celebrated within the UK on December 12th, where all gyms are closed so people can engage in science activities to commemorate Bill Nye's day of birth.
Wanna go to the gym Bill?
No, can't mate, they're closed and I'm doing science with my friends to celebrate Bill Nye Day.
A god in science.
He is a scientist who explains subjects in science via jokes.
He is amazing.
teacher: "Okay children who do you want to watch?"
student:"Bill nye the science guy!"