Pick a turn of phrase that needs to be retired due to misuse or one that should be brought back. Such as, "You need to pull yourself up by your boot straps." Misused, this phrase originally meant to be ironic and a reference to completing an impossible or ludicrous task. Pick one and explain yourself.

Irregardless

It doesn't make sense. Literally. In school, you are taught that putting "IR" in front of a word makes it a negative word. Like irresponsible, not responsible. Regardless by itself is a negative word. It means "without regard". Adding "IR" makes it "without without regard". So making it a double negative would not be a good thing to do. By getting rid of it completely, we would better our vocabulary.