Sleeping with a man who you know is married does NOT make you a "slut" ... so says Tiger Woods' mistress #1 Rachel Uchitel.
Uchitel's lawyers -- including glorious Gloria Allred -- just fired off a letter to Las Vegas showman Jeff Beacher, ordering him to remove comments on his Facebook page which refer to her as a "slut," "whore" and "hooker."
In the letter, Rachel's lawyers say the comments are false and defamatory ... and threaten legal action if the mean words aren't immediately taken down.
What ever happened to "I am rubber, you are glue"?
UPDATE: We caught up with Beacher in South Beach and he said he will make an official statement on Monday.