Voice Crew #575

I didn't even try to think of an English equivalent for the riddle. I just left the critical words in romaji.
Later I realized that maybe the word "fun" could be mixed with the English word.

カンはカンでもフンがたくさんつまってるカンって何だ？
A kan is a kan, but what is a kan that is packed with lots of fun?

"Kan" could also mean 缶 (can) and "fun" could also mean 糞 (shit), so the riddle could also be interpreted as "What is a can that is full of shit?" :-)

Anyway, the answer is 時間 (ji-kan) which has 60 minutes 分 (fun).