The bulldog dart is one of the easiest and best-flying paper airplanes you can make.
Fold the paper in half lengthwise then open it again.
Fold the two top corners into the center line.
Turn the paper over, then fold those corner flaps into the center line again.
Fold the pointed nose back to the bottom of the folded flaps.
Turn the paper over again and fold in half lengthwise. (It works even if you don't turn the paper over. Try both ways and see which works best for you.)
Fold down the wings with the crease running parallel to the base of the plane.
Your completed bulldog dart should look like this.