Film : Souten
Year of release : 1983
Spoken by : Gopal Babu(Shriram Lagoo)
Spoken to : Shaam Mohit (Rajesh Khanna)
Dialogue writer : Kamleshwar
Of course this film is remembered more for Sampat Lal (Prem Chopra)'s pet phrase - "mai.n woh balaa hoo.n jo sheeshe se patthar ko toDtaa hoo.n", but I liked this one too.
Rukmini (Tina Munim) is angry at Gopal for having dared to have entered his room. Shaam protests and says that it was he who invited him in. Gopal pacifies them both with this line;
"sir chheenke kaa munh agar khulaa rah jaaye, to kam se kam ghar ke kutte ko yaad rakhnaa chaahiye, ki usme.n mu.nh naa Daale"
"Sir, छींके का मुंह अगर खुला रह जाये, तो कम से कम घर के कुत्ते को याद रखना चाहिये, कि उसमें मुंह ना डाले"
One of those silly eighties film, which was a big hit (wonder how and why). Interesting turn of phrase, though I cannot think of a situation where you would use this line, but it is a good one to have in your repertoire.