Pretending to not be upset but then being ultra passive aggressive to levels where x (representing a quantitative level of passive aggressiveness) reaches a limit at infinity and then bitching about the said cause of annoyance later to some poor sap.
She said she wasn't upset when her archenemy was on our softball team, but she was totally desireeing and then bitched to her poor boyfriend later.
To brutally kick or stamp on someone whilst they are on the ground in the manner of Robert Deniro's portrayal of Jimmy Conway in the film Goodfellas, where they were murdering Billy Batts.
The act of removing an actual sibling from your Facebook's sibling list. This is usually done after the sibling does something embarrassing to your profile, making you want to forget that you're related.
Man 1: "Dude, your mother just posted 'I love you' all over your wall!"
Man 2: "I know. It's so annoying. I'm going to desibling her when I get back home."
Man 1: "No, you should keep it! It's so cute!"