-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!
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.