Knowledge Dong

The metephorical penis size directly relating to ones intellegence. No relation to physical penis size.

Someone who is very smart would be considered to have a very girthy Knowledge Dong.

Person 1: Man you see the size of Kevin's Knowledge Dong?? Dude really knows how to record and report metrics to companies with shit metrics.
Person 2: It's really not that big.
Person1: Shut the fuck up Chad.