David is normally a calm and mild mannered person during the day but once he takes his kayak out for a fishing trip, he transforms himself into a fish killer by going into "Yak Attack" mode.
by KayakDave December 26, 2011

Slang term used for cocaine by people who are funny, awesome, sardonic, sarcastic, light-hearted, or gangrenous. Possibly derived from cocaine's tendency to make partakers particularly chatty (as in prone to "yakking) and intensely interested in speed-talking about their relationship with their mother, their thoughts on national economy, or how much money is required for the nearest large-mammaried lass to let them do a line off her boob.
"I was planning to buy a laptop with my paycheck this month because I don't have any credit history, but I bought some yak attack and ended up doing lines at a strip club all night and spending $200 for a blowjob that I couldn't get it up for instead."
by Free Moose (limit 1 per prsn) April 17, 2011

You have had too much to drink so you walk by someones door who you don't like, open the door, yak (puke), then run.
by murphystater February 24, 2011
