"T" has also always stood for the word "Truth" in drag culture. So to spill the tea or T . . . is to tell
the truth about something juicy. This was popularized by the drag queen Lady Chablis in "Midnight
in the Garden of Good and Evil, who also considered herself
transgendered.
Lady Chablis: "The fact that I'm a
beautiful woman is clear . . . but the fact that I have a penis, well, that's my T, that's my Truth."
To Spill the Tea or T is to tell
the truth about something juicy or
scandalous.