back button
anus - Also known as leather cheerio.
He leaned over and showed me his back button.
Social Network Back Button Bolt
The act of quickly sitting up and pressing the back button on your browser as a significant other enters the room, thus hiding the profile or photo album you are viewing on a social networking site such as Facebook or Myspace. Generally seen when viewing a past lover's photo or a potential future one.
"Damn my social network back button bolt game is on point. Trisha almost saw me checking out skanky pictures of my ex, damn I wish I could hit that again."
Back belly button
Anus, butt hole, brown starfish. The belly button look alike of your ass.
Ashley says her back belly button is fresh, clean, and hairless after laser hair removal.