Near Death By Chicken

With 4 lbs of chicken to cook, I layered them in the pressure cooker, covered them with Italian dressing and water. Securing the lid, I placed the pressure cooker on the stove and put the heat to high. Quick and easy. In 20 minutes to a half an hour, dinner would be ready. Right?
After a few minutes I checked the lid to see if it was sealed. Not yet but it was beginning to feel like pressure was building. A few minutes after that I noticed some steam was now coming out of the spout on top. Good. I got the ball that goes on top of the spout, that changes the pressure. I placed it on. Before I did I noticed a bolt on the spout that I didn't recall before. Hmmmm. When I put the ball on it fell right into place. Good, or so I thought.
I knew from the time pressure was established I wanted it to cook for about 20 minutes. So I took note of the time and went about cleaning the house. 5 minutes, 10 minutes, 15 minutes and I hear a PSSSSSSSS. Note to self, I need to check that out. I enter the kitchen and the pressure cooker is silent. No rat-a-tat or shaking of the ball. Hmmmmm. Not so good. Come to think of it I had not heard that sound at all. Definately not good. So I go over and give the ball a jiggle. PSSSSSSSSSSSSSS. Uh oh. There is too much pressure in that baby. Think Sarah think!
Normally I would have turned down the heat once it was pressurized. Normally! That thing was still on high. Quick turn down the temp. Still no rat-a-tat-tat, that ball needs to come off. So I grab hold of it and it easily comes off. I quickly realize it needs to be off the heat. As the spout goes PSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS
PSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS
PSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS.
I run to the opposite side of the kitchen and watch as steam turns to liquid that fountains and burst out of the spout. Like a whale it snorted Italian dressing and water onto my ceiling. I could hear the kids on the stairs about to come in to the kitchen."Wait, DO NOT COME IN HERE!" It seemed like the lid was swelling and I was bracing myself for an all out explosion. The spewing onto the ceiling and stove lasted over a minute. Then it simmered down and stopped. I let it sit there. Too afraid to go near it. I am laughing. I call my girlfriend who I knew could laugh with me. She did.
I then worked up enough courage to touch it. Carefully I placed it in the sink and sprayed some cool water on it. A little steam and it was over. The pressure was completely released and I was able to open the lid. There in side was the most beautiful sight. Perfectly cooked chicken, not scarred from it's recent ordeal.
I threw the biscuits in the oven, prepared the sides and all was well. Not to mention scrumpditiliumptious.
If I would have been thinking I would have taken a picture of the Italian snot on my ceiling before I cleaned it off. Sorry no such pictures. Just use your imagination. Or if you are feeling brave you can try it in your own kitchen, then you will understand. I recommend you use you imagination.