I recently performed in a mixed improv show where one player slapped another one during a scene. The slap was there for a reason relating to the scene and it was a hard slap. The kind of slap that took everyone out of the scene for a brief second and made me think “that seemed really hard.” The player who was slapped did in fact get slapped very hard and the slap took her completely out of the show. She managed very bravely to not show it to the audience but was absolutely destroyed by it and even felt the pain reverberate for days after. She did have a long talk with the player after who was surprised by her reaction. For the record, he had no negative intention and claimed that in his group they slap each other all the time.