偷鸡摸狗

tōu jī mō gǒu

to imitate the dog and steal chicken (idiom)

to pilfer; to dally with women; to have affairs

偷

tōu

to steal

鸡

jī

variant of 雞|鸡[ji1]

摸

mō

to feel with the hand

狗

gǒu

dog