People who just need to be the ones who'll write those overused, tired jokes we've all seen a 1000 times before. Also, people who encourage them by upvoting that crap.
E.g., someone posts a picture of a bug in their food, and inevitably, you can bet a million dollars that there will be a comment:
"ThAt'S eXtRa PrOtEiN"
Undercooked meat? "ThAt CoW iS sTiLL mOoInG"
Significant car damage? "It WiLL bUfF RiGhT oFF"
Sketchy construction or poorly secured load on a vehicle? "JuSt SlAp It AnD sAy tHaT’S nOt GoInG aNyWhErE"