Here are some examples of how the phrase is used:
* "He described the situation to a tee." This means he gave a perfect and accurate account of what happened.
* "The dress fits her to a tee." This means the dress fits her perfectly, without any flaws.
* "They executed the plan to a tee." This means they carried out the plan flawlessly.
The phrase is thought to have originated from the game of golf, where a "tee" is the small peg used to hold the golf ball in place. Hitting a golf ball perfectly off the tee is a challenging feat, and so the phrase "to a tee" came to represent achieving something flawlessly.