The classic programming language for the TI-83 calculator, made by Texas Instruments. Slightly similar to the standard BASIC used for beginning programmers. TI-83 basic is useful for most mathematical functions, such as graphing a curve or performing unbreakable, one-time pad encryption (to do this before you get bored enough to switch back to PGP, see TI-89). However, for some TI connosieurs (i.e. gamers), Duck Hunt doesn't quite cut it.

Also, someone who uses (MODE)(ALPHA)(S) to see if they have the latest ROM version after spending hours downloading all the latest games, and then hit ENTER to get back to the home screen (this definition provided exculsively for TI-obsessed individuals)