A guy goes to the public shower and sees an old man with a huge dick...

His dick is literally hanging to his knees, so naturally the guy asks the old man:

"how did you achieve that huge of a dick?"

"Oh," says the old man, "every morning i put some weights on it so it streches out, about 500 grams right on the tip".

Next morning the guy remembers the old mans advice and puts 500 gram weight on his dick. Day goes past, and what do you know - his dick is streched to his knees, but the man wants more. Next day he puts a 800gram weight on his cock - and in the evening his dick is stretched to his ankles - but once again, he wants more. The day after he goes and puts 1kg of weight on his dick - after work he checks the length, and its now much longer then the old mans at the shower, basically dragging at the floor.

So then he decides that its time to test it out and surprise his wife with his size - but, to his and hers dismay, he can't get it up, no matter how hard he tries.

The next day the guy comes to the shower to ask the old man how does he manages to use it. He comes to the guy and says:
"I did what you suggested, and it worked - not only my dick was hanging at my knees like yours, but i got it even bigger - right to the floor, but now it doesn't go up when i need it to, how the fuck do you manage to use it?"

"I don't know", says the old man, "I use it to wipe my ass, so i guess with your length you can brush your teeth with it."