slightly-too-loud
To purposely raise one's voice in a conversation, allowing others to catch a part of it that shouldn't or otherwise isn't desired to be overheard.
A conversation at a diner:
Carl: "..Oh, and the fact that you GOT A computer VIRUS!"
-people stare-
Jen: "Shut up Carl, you're slightly-too-loud!"
Carl: "..Oh, and the fact that you GOT A computer VIRUS!"
-people stare-
Jen: "Shut up Carl, you're slightly-too-loud!"