Are you being intentionally obtuse? If not, your comment about your own smarts needs revisiting.
Do the instructions say when to put it on? Many use the condom only when, uh, the moment is nigh, if you know what I mean. Of course, seminal fluid is potentially released prior to that happy ending.
How 'bout taking it off after it said happy ending? Quite the potential for error there as well.
And 16 year old kids are certainly well known for their attention to detail.
I do not even know what to say to such idiocy...may we agree to disagree at the need to have the nanny state instruct on how to put a condom on a banana. Let me say this though, as a teacher and father of five you may be underestimating the intelligence of younger people. This is not the role for the schools as the nanny staters imply.