A dare lasts ten seconds. The story about it lasts a lot longer.

The pressure in the moment is real and it is also extremely short. Ten seconds later everyone has moved on, but the recording, the injury or the reputation has not. The people daring you are not going to be around for the long part. They will not even remember proposing it.

When the room is pushing, notice that the pressure will be gone in under a minute whatever you do. Saying no badly is fine. Being the person who did not is forgotten far faster than you think.