Whoosh is the term to describe an enthusiastic
swishing sound, often used when one is talking about something totally unbelievable that perhaps may have
zoomed past unbelievably fast, both in a literal or figurative sense.
"So, like, there was this thing, and it was so fast, man, it was like
WHOOSH and then bam! It was gone!"
or
"I dunno, man, I'm totally out of it today. I mean, today somebody was talking to me and everything they said just kept
whooshing past me, y'know? Just like
whoosh, and stuff."