Hey y'all. I've been listening to a lot of late 90s R&B lately and I keep hearing this one sample: it's a kind of 'pop' percussion sound that sounds like somebody popping their lips.

It's in:

Destiny's Child - So Good at 0:21 YouTube

N*SYNC - It Makes Me Ill at 0:18 YouTube

Anybody know where this sample comes from or know where to get it?