A fork of Rural Dictionary
1. To be perusing your mind -- as in searching for thoughts. Mind-perusing. Mirusing. Musing.
2. The act of listening to music by the band Muse.
Hey window-buddy, do you like this music I'm jamming out to right now? I'm totally musing it up.
A subject of limitless giggling and disruption in chemistry class. Often used with a sexual implication.
Mmm, wanna get cobled tonight?