How to measure penis?

[possiblysub2]

How do I measure perfectly most accuratly my penis lenght? Should or can I put ruler or smth the closest possible to pubic bone to get the best result?

 

[imontheloose]

if ur nbp & bp arent the same, ur not lean enough

 

[possiblysub2]

if ur nbp & bp arent the same, ur not lean enough

I know I am fat

 

[FredoEstelar]

You gotta be lean and yeah, just use a ruler.