From Wiktionary, the free dictionary
ちんちん or チンチン • (chinchin)
- (colloquial) jingle, tinkle, chink
- whistle (of a kettle)
- sit up; beg (dog trick)
- 犬がちんちんする
- inu ga chinchin suru
- the dog begs/sits up
- (informal, childish) penis, pee-pee, wee-wee
- Synonyms: see Thesaurus:陰茎