Headcanon that there was a running gag where the Marauders just kind of showed up out of nowhere whenever someone mentions/needs them.

Because…why not!?

Student: I wonder where the Marauders are?

The Marauders step out from behind a tapestry.

Sirius: You rang?

-

Student: Does anyone know where James is? I want to speak to him about our Quidditch practice?

James drops down from the ceiling.

James: Sorry it took me so long! What’s up?

-

Student: Say Peter, have you seen Remus? We’re meeting in the library.

Peter: Look to your left. 

Student: …Okay?

Peter: Now look to your right.

Remus is standing next to the student.

Student: How the f—

-

Lily: Let’s ask the Marauders…

Alice: Where are they?

Lily: Oh, don’t worry. They’ll come.

Alice: What do y-

-Marauders leap out of a shrub-

Lily: Every time. Every damn time.

-

Professor Flitwick: Are you expecting the Marauders?

Professor McGonagall: Nobody ex-

Marauders:

James: Nobody expects the Marauders!