1) The ability to write words and/or sentences by using someone's crap. Usually craptographer develop their own encrypted "crap code" (e.g. writing with bad-smelling excrements implies a sense of disgust towards those sentences).
2) Used when someone's writing skills are very poor.
1) My sister developed her craptography skill in her college's bathrooms.
2) I can't tell the difference between a "a" and a "o"! This was written a *beep*ing craptographer!