Where's Kai?

Kai learned a new game called "Where's Kai?". It's actually the same concept as peek-a-boo or inai-inai-ba (Japanese) but Kai reacted to "Where's Kai?" better. Here's what happens: Kai "hides" (he puts his face down on Jason's shoulder or into Jason's hands), we say "Where's Kai?" over and over until Kai lifts his head up and we say "There's Kai!". He just laughs and laughs and thinks this is the funniest thing in the world. In fact, he starts laughing while he has his face down on Jason's hands and can't wait to put his head up! Sometimes, he is so excited to put his head up, that he only "hides" for 1 second and quickly puts his head up before we can even say "Where's Kai?".