Intoxication from performing excessive amounts of conelingus.
"Your mom got me so yammered I passed out"
"I would get so yammered if I could get with Megan Fox"
"Are you kidding? These are yams, sweet potatoes don't even fall into the Dioscoreaceae family. You're so yammered."
2. "Man, I want to go out and get yammered tonight at my parent's place. You up for it?"