What became known as the "incident" in your family?

Bit late to the party but i'll go ahead anyway. A few years ago my family decided to go to a concert. While we were at this concert my mother decided she needed the toilet. She had been gone a while, when she came back she explained that the queue was too long and she didn't want to miss too much of the performance. She went back a few times and each time decided that the queue was too long and she would just wait. As we are leaving the concert venue and walking to our car she is becoming more and more unsettled, telling us she really needs to go to the toilet now. By the time we get to our car she tells us we need to find the nearest toilet ASAP. We stop at a fuel station and they say the toilet is locked. We proceed to drive around looking for a toilet until she finally cracks and tells myself and my sister to get out the car. We pull up in a bus stop and she proceeds to shit in an empty icecream tub, that my dad is having to hold for her, in the car. My dad then leaves this on the side of the road and we drive off, it was a very silent trip home...

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