"It's a really fun word, okay?" she replied. They popped out of the staircase and the gargoyles swiveled into place behind them. "Now, tell me about Sirius and my roommates."

Remus is fighting with Sirius, and James wants to be left alone. Lily Evans never misses a chance to mock her 'enemies'.

In which Sirius tries to get Snape to leave James and Lily alone without physical violence.

The Marauders had been him, and he had been Marauder, but now the other ones were dead or they might as well have been.