A self proclaimed man who has a particular lust for unusual women. These women rang from being fat to transgender, or even black on occasions. A retard fionn is often known for his ability to write off a car in impossible circumstances
That man crashed his car with his transgender girlfriend. He’s such a retarded fionn.
The absolute state of something or someone being retarded, for example: thinking that you have left your car keys at home whilst you are diving your car
I hit peak retardation this morning thinking that I had left my car keys at home on the table a few miles down the road from my house, while I was driving my car.