Kelly Clarkson recalled getting covered in Broadway star Jonathan Groff’s spit and sweat while watching him perform years ago in the musical “Spring Awakening.”

“I was in the second row, and I was like,” Clarkson told Groff, who appeared as a guest on “The Kelly Clarkson Show” Wednesday as she acted out being hit with Groff’s bodily fluids.

“It’s called— there’s a term, and it’s called the ‘Groff sauce,'” Clarkson said.

“Woahhh, woahhh” Groff responded in shock.

“And it wasn’t just your spit, it was your sweat,” Clarkson continued. “And then I felt like an inferior performer, cause I was like, ‘I have never worked that hard.’ Like, I have never, ever worked that hard. You’re, you’re like, speaking of cells, you’re whole body is into it. You, you are a spitter.”

Groff admittedly agreed that he is a “spitter,...