How To Measure Your Penis
For this you will need a Ruler, A piece of string with a knot in it, and a penis...
FLACCID LENGTH
You can't measure flaccid hang, stop trying, it changes every 10 to 15 minutes. To PROPERLY measure your flaccid length, you grip the tip of your penis and pull away from your body stretching you dick out, and then while holding the stretch you measure your flaccid length with a ruler.
This Is The Only Way To Do This.
ERECT LENGTH
Get a Full on erection, and when you have that, break out a ruler and measure... You will have to do this several times as you may get soft quickly, and trust me - it can be hard to stay erect as you fiddle with a ruler.
ERECT GIRTH
Take that string with the knot in it, and when fully erect place the knot on the top of your penis - loop the loose end of the string around your penis, pull tight, and then mark where the string reaches the knot (I just grab the string at that spot). From here you can put that to a ruler and see your erect girth size.
Please don't use the Randy Mash penis measurement methods out there - there are a lot and they are all BS.