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1.
If anyone on any social site does not have a picture of themselves, its automatically means they are fat and ugly
guy 1- hey man i just met this girl over webcam
guy 2- how did she look?
guy 1- well her webcam was off
guy 2- Rule 10 bro

guy 2- hey bro i been talking to this girl on a social network site, we might meet up soon
guy 1- nice, man. she good looking?
guy 2- well i haven't seen a picture of her... we wanted to keep it like that til the day we meet
guy 1- rule 10 bro
by Lendeezy January 26, 2012
 
2.
Any person that one thinks is interested in them, is not.
"Hmmm, I think she likes me. Oh, Rule 10..."
by bugmore November 22, 2013