when you don't know that the person of the opposite sex you're hanging out with actually thinks you're dating....as does the rest of the world
P: R and I have so much fun hanging out together
T: Ummm that's inadvertent dating
A tacticle barf that you don't initiate on purpose but actually comes at exactly the right time, such that you can continue drinking afterwards.
Rick is in the restroom. He wanted to take a dump but it turned into an inadvertent tacticle barf.