Without truth

On Monday I get to sign up for the Death Race. Opening day is usually cheaper for the first few people, so it is a big deal for me. I mentioned this at work. Immediately one co-worker challenged another to do it as well. Then we got into a discussion as to the consequences of a dare. Does the first person have to do the dare if the challenged one does it? Is the only benefit of accepting a dare “street-cred”.
What are the rules for dares?
I don’t think I trust Google on this. The best I can find says the rules are: 1) Raise your hand so that only one person speaks at a time. 2) Be positive and respectful. A put-down can hurt feelings. 3) Observe and use the quiet signal.
It goes on like this, but I think there was a miscommunication.