I don't mind a bit of a curve,but when i straighten it during an erection it easily gives me 1,5-2 cm in lenght.It's a bit too extreme.Couple that with my alread high erection angle and it's really hard to straighten it.But than again i do not have sex with anyone.i'm gonna caps it so anyone sees it.....IF YOU WANT AN UPWARD CURVE KEEP YOUR PENIS POINTING UP TOWARDS THE BELLY EVERYTIME.wHEN YOU SLEEP SLEEP ON IT.WHEN YOU MASTURBATE,MASTURBATE VERY CLOSE TO YOUR BELLY BUTTON.IT WILL STARTING CURVING UPWARDS.IT WORKS BEST IF YOU ARE STILL YOUNG.Upward curves makes your penis look smaller from the front and gigantic from the balls side.