Japanese humour

I remember learning japanese and my sensei usually used to show me some of these videos and you could think "thats stupid". But in a way japanese people are quite innocent and easily laugh at these things :)

http://www.zappinternet.com/video/zazRtoSqeS/Japanese-jokes-Bromas-japonesas

Den ki, den sha - DEN

	DEN electricity JLPT Level 4 Jouyou Kanji, Kyouiku Grade 2
As seen in:
	densha - train
	denwa - telephone
	denki - electricity (electric energy)
Not to be confused with:
	U / ame - rain
	UN / kumo - cloud

One really easy - Hon

	HON / moto book, main JLPT Level 4 Jouyou Kanji, Kyouiku Grade 1
As seen in:
	hon - book
	nihon - Japan (or nippon)
	nihon - two (long, thin things)
	mihon - sample
Not to be confused with:
	MOKU / ki - tree