Abseiling from the Tyne Bridge (for charity) and from a Cumbrian railway viaduct (on an adventure weekend) was quite scary, but more because I have a bit of a thing about bridges, than the actual rope dangling thing.
The scariest moments of my life were on my adult's trike, it's a brilliant machine and I love him to bits, but...
In the winter of 2003/4 we had a lot of snow and ice. I used the trike to ride to work and kept off the roads, sticking to cycle paths. One morning the cycle path leading offroad down a steep river valley was very icy, so I decided to ride down a short steep path and along the pavement alongside a really busy road.
The path had packed icy snow on it and the trike slid out of control. I managed to get it on to the grassy bank alongside the path, dug in my feet and prayed. We slid to a halt against the trunk of a tree.
Eventually I walked the trike back up the road and walked with it down the less steep footpath on the other side of the road towards work. I went in to work as normal. My heart rate went through the roof during the few seconds I was sliding out of control towards the busy traffic.
I've had other scary moments involving my barsteward of an ex-husband, but I wouldn't want to give anyone a flashback or put them in a bad place.