What would you do in either of these situations?

You're in the bathroom at a club touching up your lipgloss. A girl at the other end of the sink watches you put it on, then says,"I LOVE that colour! Can I borrow that from you?"

What if you're jogging along your favorite running path minding your own business, when a random sweaty stranger cuts you off mid stride to ask to have a sip of your water?

Both of these things happened to me recently and I was properly horrified. I wouldn't hesitate to share either of these with a friend, but with a total stranger? Why not just ask to borrow my toothbrush already? When this happened both times, I just kind of gaped. I didn't know what to say. I guess the look I gave the jogger was enough to make him turn around and keep jogging.

Would you share either of these things with a total stranger?