A bug-a-boo is a pest, someone who won't leave you alone. It can be about a man or a woman.
This was written by Kandi Burruss, who also wrote "Bills, Bills, Bills" for Destiny's Child and "No Scrubs" for TLC. She was a member of the group Xscape.
When this was released, it popularized yet another term for an undesirable man. Between Destiny's Child and TLC, the terms "Scrub," "Buster," and "Bug A Boo" all came to describe these unfortunate guys.
Many of the references will make little sense to modern listeners. The girls use MCI for phone calls, AOL for email, and a beeper so they can be paged. These were all valid forms of communication in 1999, but obsolete just a few years later.
Kelly Rowland admitted in a 2008 interview with Pop Justice
that she thinks this is the worst Destiny's Child song. She admitted: "It annoys me so much now, some of the stuff in that song makes me feel like I'm 17 years old, especially the line 'So what? You bought a pair of shoes' - it's such a bad line to have to sing in concert. 'You bought a pair of shoes'? What terrible lyrics. At the time we were so into it but now - what on earth were we thinking?"
Darren Grant directed the video, which features an appearance by NBA star Kobe Bryant in a scene where the girls somehow end up in his locker room.
This was the last video in which the original lineup of Beyoncé, Kelly Rowland, LaTavia Roberson and LeToya Luckett appear. Roberson were Luckett replaced by Michelle Williams and Farrah Franklin, with Franklin leaving a short time later.