The mighty Chin-Chin's (FilthyFrankShow) Japanese name is "ochinchin" (also a Japanese slang term for penis) and "Ore wa ochinchin ga daisuki nandayo" basically means "I fucking love Chin-Chin" or "I fucking love dick".
The sentence is used by Chin-Chin and it's basically all the words he's ever spoken.
Salamander man playing assflute in the mighty assflute language: Franku, OMFG it's that fucking cunt Chin-Chin again.
Franku-Chan: Oh no.
Chin-Chin: Ore wa ochinchin ga daisuki nandayo.
Ochinchin is a word used by young Japanesechildren, mostly boys, to refer to a penis. It's usually used in an innocent, teasing context. In true shota, it is used a lot.
In the shota anime Pico to Chico, Chico remarks that his ochinchin feels funny, after watching his sistermasterbate.