When you share saliva though sharing a drink, kissing, licking etc. With one of the persons sucking dick earlier passing that dick breath to the other person causing second hand dick breath.
John: Me and my mom used to share drinks together when we were little.
Jace: You know your mom used to suck a lot of dick right? That means you have second hand dick breath.
Jace: You know your mom used to suck a lot of dick right? That means you have second hand dick breath.
by YourBoiSkinyPenis October 23, 2016