to "pull a parker" means to say something
loudly that either removes someone's
ruse or let's someone else understand what exactly is going on, usually
in a bad way.
Person 1: "man i was so sick, there was no way i could have
shown up at school yesterday."
Person 2: "dude, i went to your house yesterday, you were fine. in fact, you went
wake boarding with me after that"
(nearby teacher hears Person 2, starts to walk towards them)
Person 1: "ugh. you just pulled
a parker man."