I LOVE THIS CAST
Supernatural fans always ask about the pranks the boys play on set. Jared described a recent prank he played on Misha: "There’s an episode where Misha is wearing pants that don’t have a belt (sweatpants). We were doing a scene with Sam talking to Castiel. You only see our heads. During his coverage, I would sit there, use my legs, and I would pull his pants down."
Misha got his revenge, because he explained that "as a gift to the crew I made everyone underwear, which apparently was a little inappropriate. I printed up several hundred pairs of underwear and gave them to everyone. The underwear have Jared and Jensen’s faces on it. It says 'we’ve got your back'. I thought it was really clever. Everyone on the Supernatural crew have a pair of underwear with Jared and Jensen’s faces on their ass."
(Source)
Misha got his revenge, because he explained that "as a gift to the crew I made everyone underwear, which apparently was a little inappropriate. I printed up several hundred pairs of underwear and gave them to everyone. The underwear have Jared and Jensen’s faces on it. It says 'we’ve got your back'. I thought it was really clever. Everyone on the Supernatural crew have a pair of underwear with Jared and Jensen’s faces on their ass."
(Source)