Genital tag is just like phone tag only it involves sex. It occurs when a man and a woman try to have sex but each person's genitals are in a state of dysfunction at exactly the same time that their partner is ready. (i.e. She can't get her juices flowing when he has his erection and and he loses his erection as soon as she gets her juices flowing.)
Brian Cass and his wife gross each opther out a lot; they played genital tag for the duration of their honeymoon.
A game that men and woman play where they all get naked and the guys or women are it and they have to chase some one of the other sex vwho isn't it and touch there genitals and then they get to be it and have to catch up with someone of the other sex and touch them on the genitals and then there it and so on.
Most often played by teen menand teen women at a secluded hide out.