To open one's mouth (informal/slang)
मुंह खोलना
English Usage: Don't boca when you're chewing!
Hindi Usage: जब तुम चबा रहे हो तो मुंह न खोलो!
munh kholna, munh kholnaa, munh kholane, muh kholna, muh kholnaa, muh kholane, munh khol, muhn kholna, muhn kholnaa, muhn kholane