Do cocks get bigger when they start to cum? I swear they do! I can feel it! I asked my BF if they did and he said no, but seriously I feel it, it’s like someone blowing up a balloon inside me and sometimes it can even hurt. It’s as if it gets longer and fatter for a about a minute.
From a purely scientific standpoint, it stands to reason that their will be an increase in diameter proportionate to the flow of liquid. You could turn this into a new art of lovemaking by getting your boyfriend(s) to shout out at the crucial moment "look out, here it comes", or should that be "here I cum".
next time i'm going to rub one out, i'll need to grab my neighbor and have her bring over a tape measure.
Or maybe you could just stick it in something that has no give to it and then when u cum, see if it swells and gets stuck!
I think they do. More so the ones that aren’t already rock hard. Maybe the really hard ones are as big as they can get? I need to do more research on this very important subject. Off to the lab!