My guess is that if you grew up in the late 70's or early 80's  you probably drank from these at one time. 

We had a full set in our house.  If I remember correctly, it was part of a collection available at McDonald's that launched in 1978.  Recently I found our engineer at the station drinking out of it.  I just had to take a photo and share it.  It brings back memories!

So, did you have these, or better yet still have them?