The run from bedroom to toilet after sex, because you have just been ejaculated in.

A man who messes around with other men, but no one would ever know by looking or talking to him. Used by gay black men to identify masculine gay men or DL Brothas.

"The Cum Run" is what you call it when you run across the hallway to the bathroom while covered in your own ejaculate. This would occur when you have forgotten to bring tissues to clean up after masturbating. (The running part is to prevent cum from dripping on the floor.)