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
ayon kay RayWestlake ika-02 ng Pebrero, 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
ayon kay Snickers4orphans ika-18 ng Pebrero, 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
ayon kay SomeoneNew ika-06 ng Agosto, 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
ayon kay Filip Bastien ika-17 ng Nobyembre, 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
ayon kay Retoric ika-13 ng Hunyo, 2008
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