ferdunk
This is the mark an erect penis makes when it is forcefully hit on the side of a bitch's face.
Keith was like oh shit, this girl is good! as she was pleasuring him. He then felt superior and removed his erection from the bitch's mouth, wound up, and forcefully rotated his pelvis, with the aid of his hand, sending his fallace beautifully at the girls cheek. This resulted in a clear outline of his delightful choade which lasted on her cheek for weeks.