GDC
Goddamn Cutie; Used in reference to an inexplicabley adorable person (more commonly male); Usually used when said adorable person does something so goddamn cute that there's nothing else to call them but a goddamn cutie.
Girl 1: Oh my goodness, did you see that smile?
Girl 2: OMG I know! Matthew Gray Gubler is such a GDC!
Girl 1: MGG's definitely an total GQMF.