Someone who reveals all their emotional baggage to anyone who will listen. Relates to someone who talks about all their problems--especially in dating and love--on a first date.
Sarah and John will not be going on another date because she was an emotional slut on the last one. She told him all about her failed relationships, problems with her boss, and how her cat keeps throwing up. She cried; he left.
When men wear tank tops and the hairs are poking out like they stuffed a Tribble from Star Trek under each arm.
"Brittany, I hate it when your boyfriend wears a wife-beater because of the Tribble Factor! He needs to cover that shit up!"