The context of the following conversation is Jesse rode a roller coaster at the fair. They should know they are in danger.:
Jesse says Hey I just rode the rollercoaster at the fair and it was scary..
The friend responds Yea man, its a fair you should know the dangers.
Jesse responds Yea but it's a coaster it looks so much fun to ride..
The friend responds Yea but you take your own risk riding any rides at a fair.