Slight or soft & gentle bends in either direction while being fully erect won’t hurt. It will, though, if you go overboard and use excessive force.
Here’s a tip: Lube it up, maintain that erection and do jelq-bends, slow and easy, in each direction. And keep a hand at the base.
Just be patient and most of all…careful!
Make it huge....!
Uncut4Big / Mike