I have a huge problem with saying they've done these things. I think that it's all exageration. I've explained my stance before.
It may feel like that, you may be safe saying shit like that, but to those who know speed, we smell the horseshit really fast. And anyone that claims 140+ on something smaller than a 800cc is also lying. They aren't capable of these things. I have a friend with a ZZR600 and he is constantly claiming how he touches 180 and stupid shit like that. It's not possible, yet its the same rhetoric I hear over and over.