Not effective and also offensive. I wouldn't do that to any child or man.
As a light weight person I've been taken off my feet and thrown over shoulders during disagreements with my brothers or a friend and I really don't like it. The friend that did it was probably right to do so but it is never fun being treated like a child.
In college a boyfriend chased and carried me over his shoulder twice and I wasn't fast enough to get away. We were in the country and I just wanted to get away from him for an hour or so after a fight. I've been a runner for a long time after that and take pride in out running a lot of men.
You should never exert physical force over another person unless doing so saves them from injury.