I'm anti-Backstreet and Ricky Martin
With instincts to kill N'Sync
Don't get me started
These fucking brats can't sing and Britney's garbage

from Eminem – Marshall Mathers Lyrics 1 on Rap Genius

Meaning

2000 also witnessed the peak of the boy-band / teenage-girl singer era; the album has a lot of offensive material about the big groups of that time: Backstreet Boys, Ricky Martin, N'Sync, etc.

Seriously, doesn’t just looking at this guy kind of piss you off?

Ricky Martin

Side note: the use of the word “fucking” is the first use of the word after Em said “I promised the fucking critics I wouldn’t say "fucking” for six minutes!“ in "Remember Me?” It’s actually a little over six minutes.

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