. Pull his hair all the time.
2. Replace all his hair ties with fluffy गुलाबी ones.
3. Paint sparkly तितलियों on everything he owns, and on him.
4. Throw खाना around in his रसोई, रसोईघर until आप can't even see the walls.
5. Tell Ryou that he poisoned the cake.
6. Actually poison the cake.
7. Put chewing gum in his hair.
8. Every day, sneak into his bedroom and hide a केला, केले under his bed.
9. Keep doing this until he has a massive pile of rotting bananas under his bed.
10. While he's cooking, play really crappy music, really loudly.
11. Tell him आप really really प्यार mash potato, make him cook आप loads...