A Y-hole happens when you go to Youtube to watch a specific video but then end up continually watching related videos until a large chunk of time has lapsed and you can hardly remember the first video you had watched, likely because you are too tangentially removed from whence you began.

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.

You know how, during an autopsy, you cut open the chest in the shape of a Y? Well, a Y-Hole is essentially that, except the hole is tightly sewn except for the center and the coroners dick is inside it.