I need some help to understand this

KaYakS

Just letting us know their favorite Bo Burnham song

He cast
Know Yourself
spell

Then he laughs while the entire audience
writhes on the convention- carpet floor
in an agony of horror and revulsion.

Ha ha!
You didn't expect
You'd be that nasty
On the inside
Did you?!!

Yourself vs your self?

KYE
KYS
And Victory will be Ours!