Neil Patrick Harris made an appearance Wednesday night on Late Night with Seth Meyers and they gushed about their mutual love for Rihanna.

Neil told Seth that he saw RiRi live in Vancouver and was totally impressed. “She gives a great show,” he said. “She sings and she dances…and she dances, like, from her downstairs parts.”

What intrigued Harris the most was “that face” she makes when she’s gyrating, you know?

If you don’t, watch NPH demonstrate exactly what he’s talking about.