You practice? So basically, you're like those guys who move on from one girl to the next... You're stupid.
I don't think doing that is right, I mean, why practice, you don't practice kissing for fuck sake, you kiss and it will probably end up in a loving relationship, even if it's your first and what not. If you ask me, you could've had a chance to be with a girl, rather than move on from one to the next.
So yeah, you're retarded if you do that, and plus, I think the reason why you do this is because you can't get a real girlfriend.