If emo just wont cut it, (no pun intended) and you need more hate filled insults packed into a nice tidy package, then welcome to gremon. emos are often retarded, and sometimes they are nerds. which means no doubt you will use this insult a LOT. The gay part im not sure about i just threw it in there because the 'g' gives it a kick.
emo (who is also gay, retarded and a nerd): hey, do you like my black, white and red hoodie?
you: wheres the red from
emo: my wrists jackass. and also my boyfriends anus.