See that long button on the bottom of your keyboard? That's called spacebar that is.

The phenomenon of having to come out as bisexual to the same person/people repeatedly because they assumed or hoped that your sexuality was a "phase." Refers less to the holiday and more to the 1993 Bill Murray comedy film in which the main character experiences the same day over and over.

The URL substitution for a spacebar, because URLs don't have spaces in them, as this generally signals the end of a URL.

it's short for . You can't see it, but it's the space bar.

A blank space. Basically nothing