I believe this question is more of a personal experience type of thing, however here is an example.
I once decided it would be a good idea to go kayaking with a group of friends. We didn’t think anything bad of it. It would be fun we thought, nothing could go wrong! We drove to the river and unloaded our kayaks. Once we got them in the river and started going, we realized that the current was semi-strong. We managed to keep our kayaks afloat for a while, until the current became way out of hand. We soon realized the danger we were in and decided to attempt to make it to the river bank near by. It took us a while, however we made it safely and we were relieved to be safe.