48, 48ing, 48ed, also known in full as the "48 Degree Experience" is when two platonic friends decide to do a naked trail run together. 48 is the ideal temperature for such a run to take place and a comfortable ambiance for clothes to come off in. 48ing is notorious for resulting in these friends "taking things to the next level". In fact, it is said that although these friends are running, an equal amount of baseball is played that night. ;)

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.

A 48, or forty-eight is a type of freight train car that usually holds the same containers you would see an 18 wheeler pulling?minus the wheels of course. The forty eight looks like a gondola and sometimes has the numbers 48 painted on the side of the car. Besides railroad workers?train hoppers and graffiti artists are probably the only people that would know or care what a "48" was.

A euphemism for sex. Comes from the alphanumeric sum for the word sex where S = 19, E = 5 and X = 24.

FOB Fesh off the Boat. 48 also stands for the FOB gang.

It is when you apologize for committing 49 in the definition where you say something gay to your friends.