Pecker Neckin 

When one makes a sudden turn of the neck and head to see something behind them.

Quit pecker neckin at me and get up here!

Pecker Neckin by Layce October 6, 2011

pecker necking 

My second ex enjoyed giving head, and when she started cheating on me, I knew that she was pecker necking---a good blowjob.

Honey, have you been pecker necking with Juan?

pecker necking by Garabaldbastard January 29, 2020

Peckerpecking 

The act of two dickholes, bumping as if, to imitate a kiss. (Muhwah.)

After winning the championship, they decided not to chest bump but chose to do some serious peckerpecking.

Peckerpecking by Shonald the linguist August 22, 2019