Snape's Patronus

[rtbthw_mom]

No: HPFGUIDX 142122

I just had the thought:  What if Snape's patronus looks like 
Dumbledore?  I know that all patronuses we've seen so far are animals, 
but. . .if Snape's best, happiest memory is of Dumbledore accepting 
him back (I don't think too many will argue with me that Snape doesn't 
seem to have too many good memories, much like Harry), then perhaps 
his patronus reflects that fact.  It would be incontrovertible 
evidence of what side he's really on. . .

I'm reading posts in the morning, after several days of not enough 
sleep, so this is probably way off course, but. . .

Thanks for listening,
Pat