Dongfidence  

A man infinitely confident in his sexual prowess; a cocksman.

Jack displayed extreme dongfidence when he approached the pack of nubiles.

Dongfidence by Jogglers March 25, 2009

Dongfidence 

Confidence in your penis

Candy likes Willy for his dongfidence.

Dongfidence by RocketShip August 26, 2012

Pongfidence 

How good you are feeling about your ability to play beer pong, and win.

"Jason's pongfidence was high after winning 3 rounds. His pongfidence was lost quickly in the semi-finals when he puked on his friends' girlfriend he had been trying to get with. Then he lost the round."

"Bro we gotta get the table, like I've got some mad good pongfidence going, bro."
(Bro to his bro about his pongfident spirit)

Pongfidence by MBucher May 19, 2009