He's the joker of the group. She's the Emotionless Girl or perhaps the Tsundere, maybe both. He makes it his mission in life to make her let out one of the most powerful emotional responses. It's a matter of personal pride. If he can break through her shell, he can brag about it for years. Said girl's friends will wonder why she puts up with it. Don't expect his jokes to actually be funny. The comedy really comes from her reaction, or lack thereof. Most of the time, what finally makes her laugh wasn't even intended to be funny. Examples of Must Make Her Laugh include: