To model ones beef is to place thou cockus in thee mouth and pose for the camera
SexPhoneOperator: Hey baby...
HornyMan: Would you like to model my beef?
SexPhoneOperator: oh fo' shizzle my nizzle...
HornyMan: aight then model it bitch
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi