One who is involved in a threesome with two women while banging one doggy style and being banged by the other with a strap-on. Variation of a Lucky Pierre.
While Charles was being rammed up the ass by his girl and screwing her friend Lucy from behind, he said to himself, "Charles, you are one happy man."

"I was involved in a Happy Charles yesterday!"
by esh99 November 17, 2006
Get the Happy Charles mug.