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3.
to add your own phone number to your address book in your cell phone under the name of a different person and then sending dirty texts to yourself in an attempt to impress your friends.
Jason is so lame. Those texts werent from a girl named Jasmine, he was master sexting!
by blitz609yahoo August 13, 2009
 
1.
A person or Alien capable of having any girl send them loads of nude pics.
Bobby:
They say a REAL master sexter can just imagine a girl and she will flood his inbox with pictures!!

Billy:
He is good at Master Sexting!!!
:O

Jane:
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by Avisha June 18, 2011
 
2.
The act of sexting yourself
My mom always walks in on me while I am mastersexting.
by Joseph Redrock October 29, 2011