Someone not looking to influence others. Anti-fame and anti-attention seeking individual.
Does their own thing without any regard for how it might appear to the public.
Unflippinbelilevable is a safe and acceptableway to say the f-bomb to whomever, or whatever, you wish as your recipient. Members of the clergy, children, elders, dogs, well-done steaks, and televisions are common recipients of the un-f-bomb.
This avocado is already half-rotten? Unflippinbelievable!