When suddenly faced with a dangerous situation, hold your horses - make sure of the proper action, then act.
Not all geniuses are engineers, but all engineers are geniuses. The set of all engineers is thus an, unfortunately proper, subset of all geniuses.
Miss Baker knew that the young man would have to leave very soon, so she decided to ask him to move his car a bit, so that she could park hers in the proper place for the night before going to bed.
A man once asked Diogenes what was the proper time for supper, and he made answer, "If you are a rich man, whenever you please; and if you are a poor man, whenever you can."
She got herself through college telling people their fortunes as a phony psychic. She didn't even have a proper Tarot deck, but her clients didn't know the difference.
Just because it's a "safe day" I'm not going to make out like monkeys without protection. Isn't it the duty of loving sex to take proper care of contraception?
There were so few proper members in the badminton club that it was half-way between dead and 'on break'.
You have just won a prize of $5000 in a California state safety competition for proper use of your seatbelt.
1. It is absolutely the proper thing for my kind of appearance. / 2. Look, I don't think this is the proper occasion... / 3. There's a proper young man for my daughter. / 4. Mama finds it very proper and practical.
If everyone could pay close attention, please. I will now auscultate the patient. Make sure to note the proper procedure because you all will be practicing this tomorrow.
Oh, if only we could be as shy and timid in our shameful actions as we are in our proper ones!