Score points everytime you see or do the below. :)
See 5 or more Japanese Schoolkids stand in the street and giggle
Swear that you're going to get run over by a bicycle (bonus point if you do get hit, 10 bonus points if its fatal).
Buy a cheap transparent umbrella as its raining
See a fat westerner in McDonalds or KFC (bonus point if you are that fat westerner), no points if the westerner is in Mos Burger or another Japanese burger chain.
Swear that you've seen at least 5 super models walking down the street
Get handed at least 6 packs of tissues
Get handed at least 5 flyers for a cosplay or maid cafe
See a western game collector checking out a game a bit too carefully (bonus point if you slap them).
See a PSP on the train.
Manage to go a week and not eat any western food.
See someone buying a Xbox 360 game (bonus point if they are buying the console too).
See a westerner playing a Mahjong game in an arcade. (bonus point if he's good, minus 2 points if its me).
Get approached and offered a good time or a lady by an african or someone of eastern or south eastern european origin.
Hear a westerner speaking loudly in English to some Japanese person that doesn't understand English.
See an advert repeated twice on TV.
See an ganguro girl outside Shibuya or a fashion area.
Feel free to add things. ;)