Spoon

An insult that relates someone to having the IQ of a spoon, e.g. 0IQ

Oh My God! You're such a spoon

Dingle

A colloquial name for the male genitals

My dingle is itchy

Flufferknuckle

An extremely rude insult naming someone when they are being stupid
(Only to be used in extreme circumstances)

You're such a flufferknuckle

Crow

Insult relating to the fact that crows never shut up therefore have special needs

Do you have special needs? Are you a crow or something?