He seems to be having a really good time because he is. Yeah, it felt weird being in this place, especially when he felt positively ancient compared to some of the people in this place. But after he reminded himself repeatedly that he was in Jan's body, Scott somehow found himself less uncomfortable with the idea of being there.
And the second he sees her mouth moving to the lyrics, Scott is suddenly acutely aware of what it's like to be a fly entrapped in a spider's web. Scott is pretty sure there is nothing more attractive than a woman who lip syncs unabashedly.
Except maybe one that karaokes.
And when Kate draws closer, Scott doesn't immediately retreat.