Using the pictogram movie posters as inspiration, I have designed a few of the faux pas using male pictograms to illustrate the subject. They are quick and basic but provide a rough design concept.
Drop-crotch trousers
Elasticated cuff trousers
Man bags
Wearing sunglasses inside
Ugg Boots
Another idea is to have a collage of the trend/faux pas as a background ie a collage of the item or photographs of people exhibiting this faux pas, and the picture could be faded so it doesn't distract from the pictogram.