While the basics of the fight are consistent from city to city, some cities add their own flair, whether by asking participants to wear pyjamas (like London) or rush in at the designated time screaming "PILLOW FIGHT!"
Reporters jokingly have started betting on whether Bush -- who wakes up early and hits the pillow early, too -- will be able to fight off sleep at the 9 p.m. meeting with Abdullah, who wakes up late and works into the wee hours.