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A derogatory term for someone with a peanut allergy.

Comes from the word anaphylactic shock, a possibly fatal reaction to allergens that many people with severe allergies experience.
Person 1: “That kid Caleb made me throw away my PB&J sandwich because of his peanut allergy. Now I got nothing to eat until dinner.”
Person 2: “Damn, what a flack.”
Flack by mcraftgoodfnitebad September 6, 2021
Related Words

flack macagin 

noun: a same-sex friendship that should basically be considered a relationship because the individuals spend all of their free time together. Eventually flack macagins begin to wear the same outfits and shoes, share soup, have sleepovers regularly, wear their hair the same, get friendship bracelets, etc.

Flack macagins can also be a threesome friendship as well, for there is no set limit. Flack macagins' names eventually morph into one as time goes by. For example, john+frank= jank, lisa+hannah+julia= lannalia
"Omg did you see how they wore the same shirt the other day. I mean really, we're in high school, I think that was cool when we were 5."

"Yeah, but its no big deal anymore, they are just flack macagins, its what they do."
flack macagin by I am Purple March 30, 2009

Flack Drunk 

Becoming very intoxicated on beer or whiskey while at a Bar.
"Hey dude, I'm pretty flack drunk, trying to roll out?"- Dude1

"I'm pretty flacked"-Dude 2

"I'm awfully flacked, not sure where I'll wake up tomorrow, probs gonna get a slick hummer on the sly"- Dude 3
Flack Drunk by UMDguy April 25, 2009

flack attack 

Sudden wave of perversion eminating from a single person, at inoper.. gonorhia..tune moments.
flack attack by Flack November 5, 2003