The flavortext hints that you need to "make them all U-turn" - if you individually rotate each piece of this puzzle 180 degrees, letters appear, composed of 2x2 blocks of squares. The road markings aid in noticing this transformation. (Alternately, one might notice the 2x2 block repeating patterns, and decide to solve the puzzle as a cryptogram). The image below shows the result after all the pieces have been rotated, where the clue phrase reads "Butters is cute and Muhammad hirsute when each must wear a..." Butters and Muhammad both appeared on the show South Park dressed in BEAR SUIT(s), which is the answer to the puzzle. (Doing a 180 with the title of the puzzle points you in the direction of the show South Park).