All Skate, Everybody Skate, No more shoot the duck!

Can someone please tell me what that means.  A friend of my brother's used to say that and I didn't know what it meant then and I still don't know what it means today - so if you know tell me - I've been waiting for the answer for 20 years. 

We took the kids ice skating yesterday.  Alex went 1/4 around the rink and had his fill.  The girls on the other hand loved it.  There was a lot of falling but they did a pretty good job.  If we get them on the ice more often they will probably be pretty decent skaters.  Me - I don't ice skate - I'm from Iowa we don't skate or play hockey :- )