Tellingbone 

TELEPHONE.

Self explanatory.

I believe this is a mainly Aussie expression in rhyming slang, but may be used within the sound of the bell (cockney-ism).

"Get him on the tellingbone".

Tellingbone by Dave Sheedy September 3, 2006

Tellington

A person who is anonymous to many, but if told, it could cause serious problems for all stoners

Dick: "Hey, did you tell Tellington?"
Stoner: "Na."

Tellington by blacktits420 January 27, 2015