Top Definition
British slang for a sudden, clever idea. Similar to the American "brainstorm." Often used sarcastically.
Suzie invited the neighbors in to see her most recent brainwave, a water fountain in the middle of her living room.
#brainstorm #clever #smart #innovative #dumb #idiotic #moronic #stupid
de RayWestlake 02 Februarie 2008
When a genius idea strikes you in the middle of a huge dilemma, saving time, effort, money, you and friends from sobriety or ticketing/over-ticketing/arrest, etc...

Opposite of brain fart, cerebral blockage, bad idea, and so on.
Example #1
Fred: "I can't believe this store stops selling beer at 9 pm. What are we going to do?"
You: "Brain wave! The one down on Jeff Davis Hwy sells until 11! Get in the truck and let's roll!"
Fred: "You are a genius!"

Example #2
Bob: "My car stopped working, how are we going to get to the show?"
You (again!): Brain wave! My neighbor always leaves the keys in his ignition. Let's roll!"
Bob: "You are a genius!"
#great idea #flash of genius #life-saver #high-saver #drunk-saver #time-saver #bright light
de Snickers4orphans 18 Februarie 2009
An idea that sparks up once in a while.
It's fun when you get a brainwave,especially if you get to use it.
#idea #thought #notion #excitement #pleasure
de SomeoneNew 06 August 2011
A brain wave is a stupid thought that some kind of idiot gets after a sleepless night. This brain wave can become a brain Tsunami when this idiot is some kind of boss.
A brain farth is also some kind of idea.
Good examples of brain waves can be found in politic environments, for instance: "What about attacking Iran with nuclear bombs ?"
#brain #wave #tsunami #idea #stupid
de Filip Bastien 17 Noiembrie 2005
When you are receiving oral pleasure (fellatio) and when you are about to blow your wad, you cum in her nose which feels like when you dive in a pool incorrectly and all that water gets into your sinuses and hurts, thus the name brainwave.
Dude, I was getting blown by Jessica and i just felt like giving her a brainwave, she passed out, then I gave her another one.
#blow job #bj #brain #wave #brainwave #dick #nose #pass out #sex #oral #beej #b-wave fucking #mouth #nasal #sinus
de Retoric 13 Iunie 2008
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