OOP: Pensieve, Snape's memories, and Harry

[amanitamuscaria1]

No: HPFGUIDX 65362

Whether Snape wished Harry to see his memories or not depends upon 
whether he knows Harry knows what the Pensieve is. 

 I can't imagine Dumbledore would wish Snape to have access to all 
his stored memories; there must be sensitive stuff in there! What's 
Dumbledore done with all his memories? Saved them to tape?
Would Dumbledore have told Snape that Harry has experience of the 
Pensieve? Snape might gamble on Harry's curiosity to figure out how 
to use it, but if Harry hadn't used Dumbledore's, is it not pretty 
unthinkable that he'd go up to a bowl full of silvery stuff in 
Snape's (potions) office, and dabble with it?

  My guess is the memory is so embarrassing to Snape, he doesn't 
think, and acts purely emotionally.
It may be that his Slytherin friends have graduated and left him less 
protected; a couple of years of being bullied by the Marauders may 
have driven him to the DEs. He may have had previous years of being 
in the bullying group with other Slytherins - something of an echo of 
Pettigrew, being the weaker, younger member of a powerful group, then 
suddenly being exposed to his previous victims' revenge?

The memory itself, I think, is just the sort of thing to cause a 
teenage boy to die of embarrassment - being flipped upside down to 
expose your dirty knickers to the school, especially if you fancied 
one of the girls there. It would also fit his angry response to Lily -
 she's standing up for him to boys of his own age, it's as though he 
can't stand up for himself!

The only other thing is, it wasn't just one memory Snape put in 
there, so does he think Harry may have seen something else???

Cheers. AmanitaMuscaria