How big do you have to be to fit into a trojan mugnum? If anyone has used a magnum before let us guys who haven't get some info before we go and buy them thinking we can fit and have it be too small or big. I personally have never even worn a condom before and was wondering perhaps what size i would buy if i had to. I think a lot of us younger members could use some help in this sort of a situation. Like a chart of some sort that lets us know what size penis fits in what size condom. or even just tell everyone your dimensions and what you by to cover yourself up when going at it. thanks.