I used to bid with such weak hands, but I'm trying to learn not to! I've had some nice experiences with them: they open weak two, everyone passes and I bid, as it turns out my RHO has an almost GF hand! BANG, doubled down a lot for a bad score...
I've experimented with the borders of light bidding and preempting, and now I'm going back to just a little more solid

I said "a little"

But if your partner always bids with such weak hands, as Richard says, your opps will start to know your style and you'll get hit heavily since they know you'll end up in a doubled contract. I know this is true, since I also use it against some of my opps

1NT(11-14)-pass-pass-? and they usually bid, even when V vs NV. Then I come back with my penalty Dbl and 16 HCP
"It may be rude to leave to go to the bathroom, but it's downright stupid to sit there and piss yourself" - blackshoe