It's short and to the point, and even a little cranky. But many of us have some friends who still say this. This is a public service announcement for them.
And because things that seem simple can be confusing for some, here's a handy flowchart for when it's OK to say "gay."
You'd probably never say this. I would never again say this, but I cringe remembering a time during my youth when I and others said it freely without thinking. It *did* take a little work to undo the habit when I finally realized how hurtful it is to others, but I'm glad I retrained myself. I know now that I won't have to worry about something offensive flying out of my mouth and having to feel awful about it when it dawns on me.