A person who does one of the following while alone in his/her room:
-Wear promiscuous clothing
The homeho's ritual also usually (but not always) includes a mirror and/or music and dancing.
Basically: A person acting whorish in the privacy of his/her own home/room.
"Did you hear? Amy turned us down to go to the movies so she could look at herself in the mirror while dancing naked!"
"What a homeho."