Some flies are so simple to tie that you wonder how, with such little effort at the vise, they can be effective. The Insult, tied below by Tim Flagler, is such a fly.
Designed to imitate active nymphs that either swim or end up in the current quite often, The Insult is a great pattern for beginner tiers and for those who fish waters where bigger nymphs (size 10-12) move about in froggier water. Not only is it insultingly easy to tie, it’s inultingly effective on the water.
— Chris Hunt