While the winner of the Kutcher/CNN first-to-a-million followers challenge pledged to donate 10,000 anti-malaria mosquito-netting beds for a life-saving cause, Spencer is also thinking big (not).
Pratt tells Us, "If I win, Ashton and Demi [Moore] have to wash my car." If he loses, Pratt says, "Heidi [Montag] and I will clean their house."
OK, cleanliness is next to godliness and celebrities are sort of our modern minor deities, but a celebrity car wash is the best Spencer can come up with? We're guessing Ashton lets this challenge slide like a soapy sponge into the dirty washbucket of Twitter-wagering history. Tweet ya later, bro.