A purposefully untimely announcement of carrying the Auto Immune Deficiency Syndrome (AIDS) before unloading your man juice into your unsuspecting VICTIM.
i.e. 1 "Young Janet always wanted to be a reporter, so I gave her the newsflash"
i.e. 2 *pelvic thrusting* "By the way.. did I forget to mention...that I have AIDS?!" *giggles loudly while ejaculating*