Continuity mistake: When Yvette was talking to Victor, while she was looking at his pictures, her water is in front of them in one shot but in the next shot it's gone.
Continuity mistake: At the beginning, while Yvette is talking to her friends, her bottle cap keeps on moving.
Answer: It's reckless and irresponsible and it's not something that he does normally. But, it is something that Marcus would do.