Monsters and Daddies

Last night we were at my parents house for our weekly Sunday night dinner. We decided after dinner to give the kids their bath at Grandma's so we could stay a little longer. Jon went up and filled up the tub while I chased the kids down to get them undressed and ready for the bath.
Once they were all in the bath Jon and I were hanging out with them in the bathroom getting them all washed up. I am not even sure how we got on the topic of Monsters but Jon started a game with them talking about the monsters in the hallway.
They would all pound on the side of the tub and shout "monsters, monsters, monsters" Jon took it a step further and started to open the door of the bathroom and then quickly close it saying that their were monsters out there. The kids were really into with shouting and laughing. Then Jon checked again and quickly closed the door saying there were monsters. Then 5 seconds later Grandma (not knowing anything about the game we were playing) knocked on the door. The kids all huddled in the corner of the tub clinging to each other because they thought it was a monster. Grandma opened the door and poked her head in and we all laughed about it.
At this point E had decided she wanted to get out of the tub so Grandma took her to dry her off and get her PJ's on. Jon started again with the monster game. A and K were having a lot of fun with it as Jon would open up the door and pretend the monsters were out there. This was all really funny and they were having a lot of fun.
Jon then took it a step further when he started to pretend that the monsters were getting him. He would open the door and act like they were grabbing his arm. At this point, K and A were still laughing and having fun with the monster. Then Jon took it a step further. He partially opened the door and pretended that the monsters had him. He acted like he was struggling with the monster and then all of a sudden he was gone and the door slammed shut. I mean he could not have done it better if he had practiced it 50 times. K and A immediately went into hysterics. They just fell apart. I think they really thought a monster got their daddy.
Being the loving and nurturing mommy that I am I started to laugh and I was literally on the floor laughing. Jon came back in the bathroom to try and calm them all down but there was no point. I think A cried for 20 minutes because she was so afraid. All A wanted after that was her Grandma. So Grandma had to come and get A out of the tub, dry her off, and try to calm her down.
Jon really felt bad about scaring the kids so bad. He did not mean to scare them like that but he just got carried away. We were afraid that they would have nightmares about monsters and Grandma even told A that is she got scared in the night she should just go crawl in bed with her daddy. We fully expected her to be in the bed with us last night but amazingly they all slept through the night!