A eunucorn.
Because their horns don't work 8 year old brother just told me this joke, thought it belonged here
Here's mine: Did you hear about the guy who had to snort a line of baking soda every day? He was basically addicted.
No IT guys change light bulbs, they just keep flicking the switch on and off again until something happens.
They always have pecans! (Read aloud)
Because he nuts and bolts.
He replies, "It's not a peach, it's a plum!"
Because their heads are so far away from their bodies!