Your task is to write a computer program or function that takes a list of positive integers of at least length 2 and determines if they are a "zigzag". A sequence is a zigzag if and only if the numbers alternate in being larger and smaller than the number that comes before them. For example \$[1,2,0,3,2]\$ and \$[4,2,3,0,1]\$ are zigzags but \$[1,2,0,0,3,1]\$ and \$[1,2,3,1]\$ are not.
For your decision you should output one of two different consistent values for each possibility (zigzag and not zigzag).
The code-points of your program or function must also be a zigzag itself. This means that when you take the sequence of code-points it should be a zigzag.
This is code-golf so answers will be scored in bytes with fewer bytes being better.