Is it normal to put a cut in pure salt water

My grandma used salt water as a cheap, readily available antibacterial agent. It works because it really screws up a cell's ability to retain its water content. And water is the one thing all life depends on.

i do that with every cut i get :D

I do that do! But i do that with everything, one i had a cavidy and i would press it down and wrap floss around it and squeeze....

Curiosity killed the cat.

Salt water is extremely helpful in killing bacteria. Plus it's cheap.

Agreed, it is an affective way to clean your wounds, but I would not classify this action as normal.

It's actually very good at killing bacteria! People with piercing use it to clean them. It's very good for wounds.