(Un)fortunately means that the thing in question is in your favor, not the person whom you're talking to (or vice versa).
1. (Un)fortunately, I won the raffle. (the thing in question is in YOUR favor, not your best friend's)
2. (Un)fortunately, you got accepted on the audition, not me. (the thing in question is in your FRIEND'S favor, not yours)
When someone engages in a bad act, but they want the person they fucked over to be grateful. Best known example is the deposition of Donald Trump in the case of E. Jean Carroll where the former president explains that he and other celebrities, or "stars," have been grabbing pussies without permission for millennia.
Josey: Carl, did you just eat the entire bucket of popcorn chicken that I brought for lunch and put in the fridge with my name on it?
Carl (imitating the 45th President of the United States): I did, in fact, eat all of the popcorn chicken unfortunately, or fortunately. *rubs tummy*
Someone or something that bites your ankles.
To a postman, an ankle biter is often known as a dog.
To an adult, an ankle biter may be a toddler.
To hikers, an ankle biter is sometimes a tick.
And so on.
When a man will search for hours to find something that is laying out in the open on a table. Items are often easily found by a women.
Man: "I have been searching for hours for keys."
Woman: "You mean the ones sitting there on the coffee table?"
Man: "Where?"
Woman: "Right there in the middle of that table."
Man: "oh, must have been Male Pattern Blindness"