Valid insults please!

In school about a week ago, i got called a 'stupid skank'... This is by a notorious flirt who i am surprised can even spell his own name.
Insults these days are generally crude, unthought out, vile, or insulting someones reputation. Maybe our days generation lacks imagination? At the very least, insults could be valid, and actually directed at someone in particular, rather than there being a general insult for everyone no matter whether it actually applies or not.
Please, people out there, if you really must insult someone, with no other option, at least use a bit of intelligence.

peace (and preferably no insults at all)

xoxo