Workshop for teaching about how fast STDs can spread?

[ddalki]

I'm planning a program for residents in a university on-campus residence hall about how fast STDs can spread. I remember doing a workshop in my high school biology class that really hit me; my teacher gave us all test tubes with a clear liquid in it. unknown to us, one of the tubes contained a different clear liquid than the others. we then had one minutes to "share fluids" with eachother by pouring half our vial into someone elses, then having them pour it back into ours, mixing our chemicals together. at the end, our teacher dropped a chemical into the test tubes and those that turned pink had been "infected" by the "STD" (the original different chemical from the beginning). so, my question is, has anyone done this program before and know what chemicals I could use to illustrate this? Thanks.

[Afrodite]

What for, when u date people the guys still want to have sex without condoms...lol
I am dating a guy...wich I didn't have sex yet with him...but also I didn't tell him that I have genital herpes..(I will) and he was telling that he likes without condons...hehehehehe