
Continuity mistake: When Deadpool and Wolverine are eating a burrito, Deadpool throws his on the ground a few feet to the right. In the aerial angle the burrito is gone. Then the dog runs towards Deadpool and the burrito is now in front of him. When the dog arrives, the burrito is now closer to Deadpool's foot.

Continuity mistake: During the party, Vanessa's grip on her cup differs between instant cuts.
Answer: In addition to knowing he's a character in a movie, Deadpool likes to fancy himself as a superhero, and the mask is part of his branding.
Phaneron ★