Originally Posted by
Cjzoller
How do you pronounce that? My Finnish buddies would get a kick out of me using it at work on Monday

This is how you do it, be careful: the first sillable, "sis-" is pronounced exactly the same as the "sis-" in "sister". The "-u" is the same sound as in "cthulhu". If you don't know "cthulhu", then it's similar to the sound in "Louise", but shorter. And, very important, the accent is on the FIRST wowel!