its a joke between the it fandom from when stanley uris killed himself on a bathub, usually when someone is really sad and goes to take a bath, or wishing them to kill themselves (please dont do that)
def. 1 i dont feel good, im going to take a bath
oh so your pulling a stanley uris rn?
def. 2 you are so annoying karen, why dont you pull a stanley uris?
when you joke about 'Pulling A Stanley' its a phrase to say your disappointed
I'm Going to pull a Stanley if you dont stop
To pull a Stanley means to not turn in the work that is due in class or to not due the work at all.
To pull a Stanley could also mean doing it 6 weeks after it is due.
"Have you done the assignment?"
"Nah, I think I'm just going to Pull a Stanley on it."