Hi. So me and the missus just finished having coitus and the condom broke towards the end (it was on me, I was inside her and it just broke) this happened on Sunday as well as tonight. Why do they keep breaking? We bought 36 Magnums for about $30 altogether and thought they might be some cheap batch? I doubt I can burst through the end of a Magnum...any ideas? NB: There was no air inside the condom, my girlfriend checks it every 20 seconds. We want to know why this is happening so often (condoms are supposed to be over 90% effective arent they?). Any help is greatly appreciated.