one thing at a time

when NOT to multi-task : I was using the phone while using the bathroom. Think I had a data leak.

ferme la bouche

What is the best advice for both a buffoon and someone with halitosis?
Keep your mouth closed.

Note : "ferme la bouche" is French for "close your mouth".
For more ways to say such in French, check out "How To say Shut Up In French" (@YouTube).