Shirley Temple wears me on her head, Singapore slings me, and it sounds like Sundays aren't the same without me. What am I?

If I get lost you have to manually exercise control. Want to get away from everyone? Am I the island for you! Your lord wants a circular water-filled trench around his castle. He wants you to do it over again! All three are me! What could I be?

In the hands of a monkey I gum up the gears A simple design That’s lasted for years In heartbreak or sadness I’m felt in your gut Or, grip me tight to bust a nut

in a stream of yellow I flow from the tip, a vinegarish flavor, a delicious dip. from pretzels to hotdogs, I make things just right, but in delis, I’d better get me some hot spicy brown.

Spring from the earth, But return in a bit, Safety intention? To wit, lone armpit