talking nicely or even remotely talking to a girl.
this definition is more likely to be referred to from Xbox/PlayStation users, and your average fat, 30-year-old gamer still living in his mother's spare room.
"bro, you see how johnny commented on Paris's photo? what a simp!"
a sean is where you fuck someone's ass so hard that both are bleeding from friction
dude, I pulled a sean the other day oml
guys, jimmy pulled a sean wtf
you pulled a sean? what a loser