With my girlfriend's panties clutched tightly in my hand, I let my imagination run wild. I see her writhing beneath me, her pussy dripping with desire, as I plunge my thick cock inside her. I can't hold back any longer, and with a guttural groan, I release my load, coating her panties in a sticky, hot mess. My cock twitches, sending the last dribbles of cum onto her fabric, marking her as mine.