-To be in an excited mental and physical state.
-Often times in reference to a boisterous and disorderly conduct often denoted with a straight raised arm that is slapped.
Peter: Ready to go downtown tonight Paul?
Paul: Yeah dude, SEFT!
Peter: Did you see those FINE Dallas Cowboys cheerleaders?
Paul: SEFT!!!!!
Sefton’s Law states that the likelihood of mainstream adoption of new innovations is inversely proportionate to the extent to which using said innovation makes the user look like a dick.
Coined by Adam Sefton, Executive Creative Director at Reading Room
Google Glass is Sefton's Law in action. That wearers are already being called "glassholes" shows you that it'll never gomainstream.