Snape, Lupin, and the map

[vmonte]

No: HPFGUIDX 96176

Lilian wrote: 
My guess is the same as yours, Snape did at least suspect that the 
map used to belong to MWPP, maybe not because of the nicknames but 
because of the insults the map threw at him - reminded him of 
insults in his Hogwarts years?

vmonte responds:
Snape knows all of their nicknames! In Snape's penseive memories 
James and gang are all calling each other by their nicknames...