Something (possibly an incident) that Richard Nixon repeatedly refers to as "the whole Bay of Pigs thing" in the Watergate tapes, and is presumably related to the CIA and of blackmail potential, has never been properly explained. The infamous 18-minute gap is in close proximity to discussions of this subject, possibly obscuring a clarification.
There is also the botched CIA-sponsored invasion of Cuba in 1961? . It is highly probable that Nixon is referring to that little disaster of an invasion and not something else. Since the Bay of Pigs was conceived under Eisenhower at a time in his term when Nixon was quite powerful as VP, it's likely that it is at least related to that incident, but exact details of what Nixon is referring to, and how it could possibly come back to bite him, however, have never been revealed.
There are some who believe that it's a reference to the JFK assassination.
There is a conspiracy theory that an anti-Castro group convinced Lee Harvey Oswald to assassinate JFK because they wanted another Bay of Pigs invasion, and they felt that JFK was getting soft, which they thought would prevent him from going through with it.
Highly unlikely considering Oswald was a die-hard Communist.
What the big question is is why Nixon was concerned about the Bay of Pigs incident affecting him, since, as Haldeman pointed out on the tape, "That was Kennedy's screwup." People wonder why Nixon would be concerned about the fallout affecting him, especially when the more pressing issue was the Watergate break in.
On July 22, 2008, the Los Angeles Sparks and Detroit Shock of the WNBA got into a bench clearing brawl that resulted in widespread suspensions and fines. It resulted in the most attention the league has ever gotten, but no directly involved parties will speak of it now. And it did so much for the Shock that they moved to Tulsa less than 2 years later.
Tampa Bay Lightning coach and former hockey player Guy Boucher has a very distinctive scar on his cheek◊. When asked how he received the scar, his answer was, "it's not hockey-related. I didn't tell anybody back home, so it's like this little enigma. My kids don't even know."
Similarly for the longest time Tina Fey would not reveal how she got the scar on her left cheek. She was slashed by a stranger as a 5 year old.
The creator of 7Up died without ever telling anyone how he came up with the name...
Apparently it has something to do with lithium, which has a mean atomic mass of approximately 7.
In LEGO's 2003-2004 promotional and story materials for "The Astrobot Diaries", in which two astronaut minifigures were chosen to go to Mars, it is repeatedly mentioned that Biff Starling is a replacement for another astronaut who suffered a "freak zucchini accident". When asked about this, characters respond with variations of either "It's classified/still being investigated" or "You don't want to know."
One of those "Reasons Why I Didn't Do My Homework" shirts you see being worn all over by juvenile delinquents in middle schools says "It was destroyed in a freak accident involving a hippo, a toaster, and a bag of frozen peas. You don't want to know the details"
Colbert: I want to thank you for not asking me about that thing that we pre-agreed that you wouldn't ask me about, ok? O'Reilly: Ok. The kid— the thing that happened... Colbert: Don't, eh-ah... ok?
When voice actress Amanda Winn Lee was asked in an interview to describe the scariest experience she'd ever had with a fan, she dropped dead silent for a moment before her husband Jaxon Lee suggested she talk about her second-scariest experience. See for yourself. She's never revisited the topic since.
Another voice acting related Noodle Incident: For years during The Nineties voice actor Tristan Mac Avery was an employee of ADV Films and colleague of Matt Greenfield. Around the turn of the decade something happened between them that caused Mac Avery to quit ADV and voice acting in general and develop an outspoken hatred of his former employers, Greenfield in particular. Rumors have been flying for ages, but this day only those involved know exactly what happened.
One of Jim Henson's Fraggles owes his name to a Noodle Incident. It reportedly involved one of Henson's daughters and a pissed-off Highland cow named Boober.
Marvel Studios and Terrence Howard were notoriously tight-lipped about Howard being replaced by Don Cheadle in Iron Man 2. It's still uncertain why Howard was fired, although money is an oft-cited (but not confirmed) reason.
In modern Turkey, the end of the Ottoman Empire during World War One is basically a big Noodle Incident that is taboo to talk about, mostly because that was when Turkey's Christian minorities began to suspiciously vanish.
The Creation of the Universe. We still don't know what exactly happened with 100% certainty.
The Roman poet Ovid did something that got him exiled to Tomis on the Black Sea by Augustus. Despite writing several volumes of poems complaining about his exile, he refuses to describe the cause more specifically than "a poem and a mistake" (carmen et error). Modern theories start with him being involved in [url=http://www.livius.org/jo-jz/julia/julia03.html Julia's] love affair and move up from there.
To this day, neither series creator J. Michael Straczynski nor actor Michael O'Hara will say exactly why the latter was replaced with Bruce Boxleitner after the first season of Babylon 5. The few details that have leaked out have been both vague and conflicting.
