Thanks, I thought a couple new ones too. And I modified one of yours.
Here goes:
First:
Do glutgod's ice+salt dare but on your genital region (guys) or on a breast [modified because of glutgod's comment---vaginal region] (girls).
Second:
Spray hairspray on your penis (guys) or boobs (girls)
Third:
Jerk off w/ toothpaste on your hands (guys) and rub ur tits w/ toothpaste on your hands (girls). Make sure its mint.