yakback 

to ride on the back of a Yak

"Did you ride horseback?"
"No. I rode. . . . . . YAKBACK"

yakback by Taylor CliffordMcGuiness October 7, 2013

YakJack 

To carry on a normal conversation face-to-face person while stealthily wearing a Bluetooth headset and answering a call mid-sentence and conversing with both parties.

Yo, Chris was over the day explaining the matrix to me and he YakJacked me out of nowhere, took a call from tech support

YakJack by PH-Man November 28, 2016

yackbackin

Yackbackin to geek or be overly excited.

Man calm down and stop yackbackin my guy.

yackbackin by Queen LaTifah Mason. February 4, 2008