If you ask Elisabeth Moss about how she feels about Grosse Point Blank actor Jeremy Piven, be prepared to hear an earful. The Mad Men actress sounded off about her real feelings for Piven when she sat down with Andy Cohen on Watch What Happens Live.

According to Us Weekly, Cohen asked Moss about her Speed-the- Plow costar, who backed out of production claiming mercury poisoning. She replied, “What, besides eating too much sushi, caused Jeremy Piven to quit Speed-the-Plow?”

“That's a very good one. I could go on and on," Moss said before adding,"Being highly unprofessional.”
"We were all surprised," Moss continued. "It came out of nowhere. He just didn't come back one day."
The 30-year-old beauty also noted that she saw Piven nearly one month later at the Golden Globes, when he was supposed to be incredibly sick.

In addition to Moss, Piven received bad press from Speed-the-Plow production who sued the actor for breech of contract. Piven was later vindicated when a judge ruled in his favor.

Image: NBC