Big, bold letters stated, "Lord help me this day to keep my big mouth shut." A family member had given a T-shirt printed with those words to my favorite aunt in the late 1970s.
Aunt Debbie was known for speaking her opinion in those days. Today, she's still opinionated, but certainly softer spoken.
I'm guessing it would be fair to say that most of us have been guilty at some point in our lives of speaking a little too freely. I've confessed the sin of the tongue - unfortunately more than once - in the confessional booth.