bling-bling

wealth, usually in the form of jewelry or flashy merchandise; can also be used to indicate money

Steve: That is some nice bling-bling you have hanging around your neck.
Bob: Thank you. I bought this neck chain yesterday.

signal to noise ratio

the ratio of signal to noise in decibels (dB).

A postitive signal to noise ratio means the signal is louder than the noise. A negative signal to noise ratio means the noise is louder than the signal. Typically, the signal is speech, music, or whatever sound is being listened for.

boojy

see boojie
Stupid, dumb. Comes from combining the words Ghetto and Bourgoisie. Can mean "uppity." Used by people from St. Louis.

Wine in a box is boojy.
Your mom wont let you go out? That's boojy.