If someone does something that another person does not approve of, or said person makes a comment against a popular trend or the consensus of a majority, the opinion or credibility of that person may simply be thrown out by stating that they "wear sketchers," implying that they are not in a position to make a proper judgment on the particular subject being discussed.

when you've done something so cringe you can't stop replaying it in your head and it stops you from getting on with your every day life