A make shift bong made out of a darth vader mask and a plastic water bottle made by a group of university students from Bristol... gucking potheads have the best ideas!
The act of breathing heavily into a microphone, cell phone etc., without realizing it. Breathing is often heard when the microphone is too close to one's nostrils.
Hey Dave? You're vadering REALLY badly, dude. I'll have to either turn down the volume, or you need to pull that mic out of your nose...
In multiplayer gaming, to accidentally position a headset's microphone in such a way so that the player's breathing is heard loudly over the output. Taken from the similarity of the sound to Darth Vader's breathing apparatus.
Player 1: They're defending B base...
Player 2: sssshhhh...hoooo...sssshhhh...hoooo
Player 1: Hey man, you're kind of vadering the mic.