"He cut her bloody throat"

One does wonder how her throat got bloody before he cut it...

Ah! But does the author mean "bloody" in the literal sense or in the vulgar intensive sense? If he were to have said "He cut her fucking throat" would we assume she was in the act of performing fellatio when he stabbed her? And if she was, why didn't he stab the guy to whom she was giving the blowjob as well?