you were just walking up to the top of a building for some reason and you found your friend's brother peeping on some girls with a pair of binoculars. He is drooling slightly as he does so, and mumbling to himself.

Gai: "Haha... So pretty..."

You walk up behind him, and he doesn't notice you for a second. You tap him on the shoulder, and he jolts, losing his footing as he tries to turn, and falling right into your chest, knocking you both down.

Gai: "Ow..."