An acronym for a common phrase among overly smart for their own good engineering students. Full phrase is "Ride my Rocket" a reference to either the black and white Econ class classic, "Dr. Strangelove" or the fact that they would like you to be a test subject.
"What's that you've got there Justin? Is that a hypersonic space rocket?"
Stands for, "Racial Music Recognition". When a person's favorite song is turned on and is the most listened to style of music in their race, this person will let everyone know that it is their favorite song.