Telenuts 

When individuals use extreme bluster and bravado over the phone when they cannot back it up in person. Occurs because of the distance between the two parties and usually with caller ID block for extra protection.

A job applicant who did not get the job got very hostile at me today. He had a huge case of telenuts, going on and on how I was a dead man walking.

Telenuts by Phill Latio August 6, 2007