Invisible Man Hole

When two men are engaged in anal sex and the receiver has a sheet over him with an appropriately sized hole and anal ease lubricant.

Mike pulled the sheet over Ian and decided to engage in the "invisible man hole" position.

Invisible A-Hole

One who IMs you on purpose even though you're invisible online.

Past: (on IM)
X: Ya, I stay invisible online so that people I hate can't IM and I only IM who I want.
Y: Cool

Present: (on IM)
Y: Hey, you're there aren't u? LOL
X: YOU Invisible A-HOLE!!!