A Backstreet Boy's last bender

On Grand Mental Station, Beth remembers the night of her 21st-birthday party at Jillian's - when she got to see what turned out to be AJ's last bender before he entered rehab in 2001:

... We chuckled every so often watching these guys guzzle cheap beer and act like schmucks while the poor bouncer-esque schmoe kept the girls who kept sidling over at bay (as opposed to the other girls who were all over them with their permission, especially the blonde one). It was actually kind of sad. The two greasy ones kept to themselves, kept the Miller Lites coming and seemed deep in conversation.

The next day, the Back$treet B0ys showed up at Fenway Park to sing the national anthem. Well, all but the short greasy-looking one. ...