And what if it's foreshadowing related to Halloween party? During last big event (prep's party) MC came 5 times (Sage, Lily, Camila, Josy/Maya, Sarah&Melanie), which was already commented as quite impressive. But since Sage gave him only 3 out of 5 rating, he knew that in order to actually become THE DIK, he has to sacrifice everything and pursue this dream. That's the real reason he signed up for the gym (Josy's initiative was just a lucky coincidence) - after all MC knows that the tule #1 is Cardio. Fucking Josy in the gym and preparing Nora for the same treatment is just part of the Great Plan to improve his cardio beyond the level humanity thought was achievable.
Next stop is mentioned in the begining Halloween party - MC already got to score 5, now his new goal is to rise the bar to 8 fucked girls on one party. That's why the sign says about falling and getting up - it does not refer to MC as a person, but his trusty foot-long tool, which has to get up each time.
In fact it's pretty obvious when you notice that each season is part of the MC journey:
S1 - trying to become a DIK
s2 - being a DIK
s3 - metamorphosis to become THE DIK
s4 - a great mystery for now, but I'm sure the clues are already there in the plain sight before our eyes
As you can see, now everything makes perfect sense.