calcagraphing

word similar to telegraph but means that you're passing notes back and forth on the kind of expensive graphing calculators private middle schools can afford which can write plain english letters (without turning it upside down) to. Calcagraphing is used as a way of communicating which is usually more obvious because of the size of the calculators than passing balled up notes but some people use it anyway.

1:Did u hear about Clair calcagraphing about her boyfriend and how Mr. D found out about it?
2:Yeah I know, she's such a dumbass