Ooh...tities. I think that's as much an universal reaction as laughter. I know I'm guilty of it myself. haha
In the pronunciation of Unalaska though...how big and pert a set of boobies are we responding to cause the bigger and more pert, at least for me, the longer the Ooh gets drawn out.
65 year old knee knockers = Ohchitlaska!
20 year old double d quarter bouncers = Oooooooohlaska :-)))