Sigma was standing next to you as you pranced around the the hallways of the prision yelling:

"Let's dance! It's spacious! Compared to the painfully small cell, this is like a dance hall!"

To a normal person, it would've looked like you've gone insane.

Sigma then speaks up as you grab his wrists and begin dancing with him as if you were in a ballroom.

"Excuse me.. instead of that, what do you intend end to use me for?! How do you intend to defeat Fyodor?" Pause "Stop!!"