I wouldn't Call the Police, but thats up to your wife to decide. Personally, If I was the teacher I would have int this order Laughed, Threw up, Went to the teachers lounge, called the janitor, taken the rest of the day off. Your wife may or may not think along these lines, and I feel sorry her. At 24 I am still a kid at heart and really haven't grown up a day past 8th grade in what 10yrs, so whether or not some of you were or are prudes now, there will always be imature people in hisghschool, just because you didn't have the same kind of fun they had doesn't mean you can or should look down on them, vandalism aside they guys probably had more fun in 1 day then alot of us myself included have had in years, just because they can let themslves go completely. Me, I would love to be a kid again.
I personally wouldn't push the issue, and depending on why I was picked I would give them what they want. If they Liked me for my sense of humor, then talk about it for day, make cracks about the smell any chance you get let them know you enjoyed it. If they hated me then I would cry non stop, any time I saw a senior I would give them an evil eye. That way what ever happened it was such a huge success that in the future for years it will be passed on, and hopefully school system won't be so bad that these kids would be copy cat'ing, more then likely it will never happen again for the sole reason everyone knew what happened and each year they will feel the need to do something different. But You need to react exactly as desired and more then they desired so that this time it becomes a Legendary. If they wanted her to Cry, then perhaps she should take a week off, maybe spread some rumors that she started to see a shrink.