Top definition
The process of putting your sim card into your old phone when your parents take your phone because you're grounded. SIM card switching is commonly done by teens.
Teen1: "Hey!!"

Teen2: "Hey how're you texting i thought you were grounded?"

Teen1: "I did a SIM card switch and I'm using my old phone :) I'm so smart."

Teen2: "That IS smart.. I'm gonna do that next time I'm grounded!"
by LaramieT1o28 February 05, 2011
Happy St. Patties Day!