Recently, I've seen this being taken a step further using derogatory height stereotypes, like "Short Man Syndrome/Napoleon Complex." People will insult any man they dislike using these labels, regardless of his actual size, most noticeably with those who dislike Donald Trump (who's 6'3"). They claim he has Napoleon Complex (a few examples), or they photoshop him as a little person. When people dislike tall or average height men, they still use short men as the scapegoat. Guess who socially pays for it when this happens? Tall men who have "short man syndrome" on the inside, or actual short men? If being short on the inside is bad, surely an actual short man must be worse.
It's the other side of praising a short man by saying he's tall on the inside, a blatant display of people's prejudice. People also like to excuse this by claiming it's about being portrayed as childlike, or it's about hand/penis size rather than height (as if that makes it better), but it's not like society hasn't been doing this since the Napoleon days, or with Kim Jong Un. The mods who run the TinyTrumps forum (self-explanatory) even admit it's about height in a message they send when someone breaks a rule:
"Thanks for submitting to /r/TinyTrumps. You most likely know that were all about making trump look short for laughs. But with this ideal, comes some rules we need to follow." - Source
Fact of the matter is that only short men have official-sounding syndromes and complexes, and nobody insults a 6'3 man by making him 7'3. It's all "just a prank bro" anyways, or one of the other countless excuses people use to justify this. My favorite part is when this behavior comes from the type of people who get offended when fat or flat women are mocked. Stay politically correct, kids.