I hate people who breathe in their mic like they were running the marathon or something...
I used to do this while playing Top Spin on Xbox Live. Like, I'd make it sound like I was really running around the tennis court, getting tired. I'd even do the grunts and shouts when I hit the ball.
Most people thought it was funny.
I play on XBL so I am used to stupid voice chat. I usually am too lazy to turn it off, or it's actually useful so I keep it on even if there's an annoying person in the game.
Soooo many little kids trying to sound tough. The best part is when you get one whose mom catches them swearing and then they have a fight with their mom and end up crying. All on the mic... They'll like throw in on the ground, but their crying/screaming fit is loud and you can hear it clearly.
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