There has been a surprising amount of experimentation in the oreo world. People have found that for a perfectly saturated oreo, you need to dunk for four whole seconds. This maximizes absorption so your oreo isn't just wet, while also not letting your oreo turn to mush. Experts say that there is no benefit to dunking your oreo for more than four seconds, unless you want it to totally dissolve and fall into your milk.
The Oreo cream has a perfect consistency to give you a firm hold using a fork. Just slide in a thin fork from between the cookies into the cream, and dunk it. Be sure to stick the fork in gently, though, otherwise you might break the cookies. If you want to go all-in, consider investing in the Dipr – a drunker’s best pal.