An often small and rather persistent (read: annoying) wasp that flourishes in the summer months and is easily recognized by the yellow portion around its midsection (the "jacket").
Yellowjackets buzzed around the table and ruined the barbecue.
โดย InspectorJavert 06 มีนาคม 2005
Photos & Videos
Ephedrine tabs that keep America moving.

See mini thins and trucker speed.
Dude, I'm never gonna get this shipment of dirty mexican produce to Cleveland on time if I don't get me some yellowjackets.
โดย Jaggo 22 มีนาคม 2004
a capsule of the barbiturate sold as Nembutal
Don't touch that yellow jacket.
โดย The Return of Light Joker 24 พฤษภาคม 2008
the wasps that fly around garbage, follow you around and buzz in your face for at least 5 minutes, fly into your car window and make you almost shit yorself, and sting you just for fun because theyre assholes. these fuckers are nasty, and look orange at a distance and hover in circles around wherever they are, and if you get near them, they will fuck with you until you can wave them off without getting stung. they also like flying into peoples houses. fortunately, they are easier to kill than flies, but are still annoying as hell, and can even be scary, especially when youre driving a car, and they fly into your window and start flying around in front of your face or land on your junk, recipies for disaster.
there was a giant wreck tying up traffic on the highway. some dude had his window open. a yellow jacket flew in, and stung the guy in the face, then he slammed into another car, and ther traffic behind them piled up and nailed them.
โดย stangorino281 23 กันยายน 2012
Slang for barbiturates.
Yellow jackets is slang for barbiturates, a family of chemically similar depressants.
โดย Barbiturates 20 พฤษภาคม 2008
Two day aged sex brusies on arms, neck and/or upper torso
OMG, what happened to your arms?! It's my yellow jacket, to be worn like a badge of honor! Tom came over and he is a biter
โดย SG0303 08 มิถุนายน 2011
1. The coolest motherfucker ever.
2. Someone who whoops a good amount of ass at racing games
V - Damn man, why am I so hated

Xiz - Cause you're not YellowJacket
โดย Mr.ShortBus 02 มิถุนายน 2011

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