This is usually school assemblies, interviews, tests or physics exams.
2.Also, to "pull a jeff" may refer to any act of appearing sleepy or fatigued, or to leave school early (ie lunchtime) to go home and sleep.
dude1: /pulls a jeff
dude1: man you look baddddd, you should pull a jeff
Austin: Fuck her, pull a jeff on her ass.
Mike: Your right dude i will get on that asap.
Mike: I love virgins but there so hard to find.
Austin: I love tight pussy too.
2.) Lacking a pair of male genitals.
3.) To cry over a female that doesn't really care about you or want to be with you.
4.) To be a bitch.
Jim: Yeah man, Christy just dumped me.
Tim: Wait, you guys have been dating for what, two weeks?
Jim: Yah, but I loved her.
Tim: Wow, way to pull a Jeff... pussy.