A state of working extremely hard or maintaining a very strong work ethic, as Kanye West is doing following the ordeal at the 2009 VMA's (coming out with a new hit song every Friday).
-Yo man, you wanna grab a bite?
-I wish I could, but I'm gonna be studying for the next four hours straight! I have a big exam tomorrow, so I'm on my Taylor Swift grind right now.
-Oh aight, I'mma let you finish.