The holter monitor's display flickers with every throb of the black amateur's cock. He's a beast, his massive dick swelling with each stroke. He's got the monitor working overtime, its needle pegging as he edges himself, pushing his limits. His big, black cock glistens with pre-cum, a testament to his restraint. He's a sight to behold, his body tense, his breath ragged, as he teases himself to the brink, again and again.