Err, is blood the only fluid that transfers std's or can other bodily fluids do so as well ie. vaginal secretion?
Besides when you licking, you do so on the outside while the blood is caught inside within the sponge and wont come out until you repetedly squeeze it by pumping away. Even then it will just slightly color the condom, if the condom is colored itself - no man will notice.
I like this thread.