I remember one dare from a couple of years ago...I was dared to clean my neighbors swimming pool completely naked. The house was rented by 3 female roommates, and the one who dared me said that it could be anytime during the week that I wanted.
I accepted the dare thinking I could figure out a time when I could accomplish the task without being spotted...but sure enough, one of the roommates showed up halfway through. I just completed for the next half hour while she chatted with me u til I was done.
She then dared me to repeat the job one afternoon when all three of them were home and laying out tanning. Mission Accomplished