One who is beatstreet is so entirely cool for their own good that they are almost uncool.
Catalina: I know, I know, I'm sorry I won't meet up with you on the freedom trail I've just got other more important things to do with my time.
Laura: Oh I see how it is, too beatstreet to hang out at one of your favorite historical locations anymore!
For a person or an object or situation (etc.) to be on the street of "beat"; used figuratively. Beat is defined in this instance as being lame or boring.
"It's so awkward right now between me and my family after I walked out on Christmas."
"I know, it's beatstreet.
"My girlfriend just broke up with me and tore shit up in my apartment before she left!"
"I hate you."
"Ugh! That's beatstreet, man!"