Remember when you were a kid -- or last night at the bar, whatever -- and you scrunched down a straw wrapper, dropped water on it, and watched in amazement as it grew almost four times its original length? It’s effing insane. How did that tiny little thing just up and become huge in a matter of seconds?
If this sounds extremely similar to a penis, good. It’s supposed to. We can all agree that penises are crazy: they grow, they shrink, they move on their own... seriously, your ding-dongs are like a never-ending magic show.
And speaking of show, some penises tend to do that more than others... which is why Jon Hamm is famous.
But what really determines whether you’re a grower or a shower? We decided to ask penis pros -- or urologists, in layman's terms -- Dr. Tobias Kohler and Dr. Alex Shteynshlyuger to give us the dirty on the science behind this phenomenon.