During the line, "I'll call you tomorrow morning if I need my toast buttered", Wolverine lies on his bed and and is seen stroking a picture frame. This is a reference to the scene in the X-Men animated series in the 90s, in which Wolverine gazed at a picture frame of the superheroes Cyclops and Jean Grey. This scene from the cartoon also became a famous meme.
In-battle, the picture frame depicts EpicLLOYD partially in makeup as Gandalf, referencing the origins of the heroin joke.