Honestly...round your penis to the nearest femtometer

[LemacST]

I guess I'd round mine to approximately 6.385485932758445" long and 5.2958268539857122" around...more or less, give or take.

 

[SpoiledPrincess]

Could you be more accurate?

 

[LemacST]

Could you be more accurate?

I think measuring to the nearest yoctometer (.000 000 000 000 000 000 000 001) is pointless and it really all boils down to the femtometers. Size does matter!