So . . . took the kids to the park. All was lovely and fun. Had picnic, played and then went exploring which the kids love. All was fine. Found a little river. Started to rain a bit so took shelter under a bridge. The kids thought that was great fun. All was lovely.
DD6 (just) started saying she was scared under the bridge. Fine. Reassured her. She kept saying it over and over. She wanted to go somewhere else. Explained a lot that we would get wet and that would mean we would have to go straight home. Showed her the rain falling on the water to show her how heavy it was. Told her to listen to the rain to hear how heavy it was. Talked about it a lot.
She kept on though so I said the choice was either, wait until rain stops then we can carry on exploring, or leave the bridge now get wet and go home. Either was fine with me.
She wanted to leave. Fine. I didn't want her to be scared.
So I put a blanket over their heads to reduce how wet they would get. They thought this was great fun. Came out from under bridge. It was raining quite hard. I had no hood and was getting soaked. Kids walked along next to each other with blanket were still getting a bit wet.
DD wanted to go one way but the car was in the other direction so we couldn't. DD started wailing and saying she didn't want to go home. (didn't we just discuss this!) I said we had already decided. She wanted to get back under the bridge. I said but you were scared under the bridge! She said that she didn't want to get wet cos then we would have to go home. But that's what we had discussed in detail and decided on based on what SHE wanted and how SHE felt!
It was too late. We were wet. We had to keep going in the rain and walk back to the car.
She wailed and wailed and wailed and even had a stampy foot mini tantrum. She's 6! Surely she's too old for that? At least that's what I told her.
She then said that she wanted to go down the road that was in the wrong direction. I suspect she had lied about being scared all along so we would explore immediately in the direction she wanted to go. I don't like this manipulation. Not pleased.
She was wailing so much so wouldn't hold the blanket properly. Younger DC was getting wet. She was getting wet. Rearranged blanket. Still wailing and not holding blanket. Younger DC getting soaked.
I get worst mum of the day award for losing it with her. I told her repeatedly to shut up (which anyone who has read my "shut up" thread will know I hate and find a horrible thing to say to a child). I swore, threatened her with a smack (something I have never done before, I don't smack), and I even called her a fucking bitch! 
Does anyone have any words of wisdom? Usually Cognito comes along at this point and explains very sensibly and wisely where I went wrong. (obviously the whole last paragraph is wrong!) Cognito . . . you must think I am an idiot!
We just got home. DD was told to go to her room. Just checked on her, she's fallen asleep and looking like a beautiful angel. We haven't spoken yet. Obviously I will apologise for the bad thing I said.
Think I'm going to cry now.