An insult that is coated as a joke, which is sent to the recipient, and then withdrawn (taken back) afterwards; claiming it wasn't intended as an insult.
Girl : "Well we all agree that Becky is such a slut."
Becky: "Excuse me!?"
Girl: "I'm just joking!"
Becky: "Don't be throwing boomerangs bitch; you ain't playin'!"
Adj. A state of drunkenness. Inspired by ESPN's Chris Berman, aka Boomer, who is known for his catch phrase "rumblin' stumblin' bumblin'", a person who is boomered is all three of these things.
I've had a long week. Getting risky drunk isn't enough. I want to get boomered!!!