Trans Atlantic Cable 

An unusually long skinny turd with one end that disappears into the drain of the toilet while the other end is clearly visible. Often used with the verb "lay" as in "laying some Trans Atlantic Cable." Also referred to as laying "TAC" for short.

Give me a second guys. I need to go lay some Trans Atlantic Cable. I hope there's some toilet paper left.

Trans Atlantic Cable by UnclePercy April 7, 2014

transatlantic cable 

Humorous reference to shitting in the lavatory on an airplane which is en-route across the Atlantic ocean.

About two hours after leaving JFK airport, Frank got out of his seat and shitted in the lav. He said he was going to lay some transatlantic cable.

transatlantic cable by Frank Klaune April 14, 2005