i scream , and i turn and bite down on my own arm , moaning as he stretches me so much it 's almost painful , but it 's too pleasurable to be painful and i like it too much , the way he does it slowly , the way he caresses my swollen sex to wet and prepare me , the way he leans over and starts to graze his teeth over my nape , primal , like a werewolf wanting to bite me .