Oral sex
Oral sex: Risk of contagion from oral sex
Introduction: Various diseases are contagious by oral sexual activity. Although full information is available, the diseases listed are some of the ones that can be caught during oral sex. See also the full list of diseases contagious from sex. The oral sexual act also involves close physical contact and transfer of fluids, so see also diseases contagious by sex, diseases contagious by physical contact, diseases contagious by bodily fluids, diseases contagious by saliva, diseases contagious by kissing, oral sex, and other types of contagion.
In addition to all of that it can also leave stains on a dress and that pesky D.N.A. evidence. Evidently Monica is a spitter.