What physical or other clues indicate someone is a dim wit?

[pjmret]

Says the political executive ***** and ninny who voted for corn pop

Ninny? Lol
Even your attempted insults make you sound stupid, immature, and gay

 

[Tripoli]

Ninny? Lol
Even your attempted insults make you sound stupid, immature, and gay

Congratulations, you didn't say *****. Perhaps you are capable of learning. Do you wear diapers like Biden does?

 

[pjmret]

Congratulations, you didn't say *****. Perhaps you are capable of learning. Do you wear diapers like Biden does?

Do you? Never mind unlike you I don't fantasize about men in diapers