Cover-up term for bisexual.
This is because of the periodic table of the chemical elements (chemistry): The 83rd element is Bismuth, which is abbreviated with "Bi".
(67 42 = Homo)

Adj. Something that is expected to have a long lifespan by virtue of having existed for a long time, based on the lindy effect, named for the New York restaurant Lindy's, coined by Albert Goldman and popularized by Nassim Taleb.

83 is the number of god, this number is all powerful and can only be explained through god. However with such a loving powerful force comes with an evil contrary, being 38. 38 is disgusting and can be associated with the devil.

Truly, the greatest and most profound of numbers.

A true man can only be gifted with the insight into the mysteries and wonders of this delightful digit, if they receive a prophetic dream from the one true messiah, Majestic Beard.

The church of 83 is always recruiting, and is currently looking for individuals to fill in as Bishops.

Please apply to Warisha: Lady High Priestess of 83.

To contact her, please look into your heart.

Hetrosexual Oral Sex. Think about it - "69" would only work for M/M or F/F sex...

Stupid answer to a stupid question. It can be used when a student in class is too slow to write something down and has to ask the others to repeat the last part all the time.

After a while you'll get annoyed and you just answer "83!".

It can also be used when someone asks a question of which he could have found the answer if he just thought a little.

anal sex (think on the 8 as an ass & the 3 as wang)