A foot long
A foot long is when your penis is so long and skinny, it looks like a stick. It's 12 inches long, and if it wasn’t for the width, it could be a noodle.
My foot long is so long, I have to walk in a straight line to keep it from falling over.
My foot long is so skinny, my sister said it looked like a spaghetti noodle.
My foot long is so long, I had to rent a bigger pair of pants.