Moments in your life where you have been filled with dread

I've had a few and there's no worse feeling - that sinking in the pit of your stomach. The worst is when you know you've done something, know you're going to get into shit for it but aren't quite sure when it is going to happen.

In my case getting robbed in work ( an off-licence) when I was 19. Some bollox came into the shop with a hammer, started smashing the counter and screaming at me to "get him the fucking till". Which I did, fully expecting him to go be on his way but.he wasn't content with just threatening me with a hammer though. To add insult to injury, on his way out the door with his loot he lobbed a few bottles of wine at me, just for giggles.

On a serious note , I remember as a child being filled with dread as I road my bicycle towards a kerb. That's not very exciting, I hear you scream, but in my case I was riding no handed and had a 99 Ice Cream (with flake) in each hand. I realised I wasn't going to make it up the curb without lifting the handle bars and proceeded to stack the bike and cover myself in Ice Cream. I think I cried as well.

So anyone have an examples of when you have been filled with utter dread?