Just a dare you can use for a lost bet, or for choosing a Halloween costume.
Use this number generator:
http://www.random.org/dice/
http://www.random.org
Roll a dice to choose your costume gender:
[1-3]
http://www.spirithalloween.com/womens-costumes/
[4-6]
http://www.spirithalloween.com/mens-costumes/
Now generate a number for how ever many pages there are.
EX. if you have 19 pages, and you get the number 4, then go to the fourth page.
Now generate a number for how many costumes are on that page.
EX. if there are 24 per page, and you get number 18 that is the costume you must wear.
Have fun, and please leave responses for better ideas.