Tony Bliar is a deliberate misspelling of the name of a former British Prime Minister called Tony Blair. The term originates from the fact that Mr Blair was famous for conveying facts in a manner that was not uncommonly untruthful. For example he lied to the British people telling them there was intelligence that Saddam Hussein had weapons of mass destruction capable of being launched to the UK in 45 minutes. The truth was there were no WMD and the lie took the UK into war with Iraq along with the US.
It:
1) Is the deepest lake in the world (5369 feet)
2) Is the oldest lake in the world (over 25 million years old, most lakes don't last over 10,000 years)
3) Is the largest body of freshwater in the world
4) Contains a fifth of the world's freshwater
5) Harbors over a thousand unique organisms that only live in Lake Baikal. A cool example is the freshwater Baikal Seal, which is found nowhere else
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.