Deadpool: Want to talk about what's haunting you, or should we wait for a third act flashback?
Wade Wilson: Your little cinematic universe is about to change, forever!
Paradox: Mr Wilson, you appear to have soiled yourself while unconscious.
Wade Wilson: I wasn't unconscious.
Wade Wilson: Is that supposed to be scary? Pegging isn't new for me, friendo. But it is for Disney.
Blind Al: Wanna do some cocaine?
Wade Wilson: Hey! Cocaine is the one thing that Feige said is off limits.
Blind Al: What about Bolivian marching powder?
Wade Wilson: They know all the slang terms. They have a list.
Blind Al: Even snowboarding?
Wade Wilson: Even disco dust.
Blind Al: White Girl, Interrupted?
Wade Wilson: Even Forrest Bump.
Blind Al: Do you want to build a snowman?
Wade Wilson: Yes! But I can't!
Answer: Part of the novelty of knowing that he's in a film means servicing the plot, especially as a proxy for those audience members who may not be as familiar with some characters. Deadpool also does seem to know who Elektra is, as he apologises to her upon hearing about Daredevil's death, even though he just met her moments earlier.
Phaneron ★