look up any word, like swag:
 
1.
To wear no underclothes.
James: oh gosh jack, look at that chick, she doesn't have any underpants!! I can even see her pussy under her skirt!!!

Jack: yeah, she's Cyrusing.
by freakishlyyours February 05, 2010
 
2.
To take a picture or make a video (of you or someone else) licking a random object in an extremely sexual manner in the style of Miley Cyrus.
Guy 1: Why are you licking that lamp?
Guy 2: I'm cyrusing.
Guy 1: I guess you really love lamp.
by ASHPoD October 08, 2013